Wyoming
On Saturday , none of 4 Wyoming cities had a day more extreme than any in 10 years or more. In the county averages of Tuesday 29 September 2026, 2 of 23 Wyoming counties did.
Cities
| City | Day | High | Low | Precipitation | The day | Month so far, rank | Years compared |
|---|---|---|---|---|---|---|---|
| Casper, WY | 72°F | 42°F | 0.00 in | the warmest 3 October since 2025 | 20 | 87 | |
| Cheyenne, WY | 74°F | 45°F | 0.00 in | the warmest 3 October since 2025 | 24 | 154 | |
| Lander, WY | 74°F | 43°F | 0.00 in | the warmest 3 October since 2025 | 16 | 136 | |
| Sheridan, WY | 72°F | 44°F | 0.00 in | the warmest 3 October since 2025 | 22 | 120 |
- 2026 so far averaged 53.7°F in Casper, WY, the warmest 1 January to 3 October on record, in 87 years since 1940; provisional.
- Fall 2026 so far averaged 63.8°F in Cheyenne, WY, the warmest 1 September to 3 October on record, in 154 years since 1873; provisional.
- 2026 so far averaged 54.8°F in Lander, WY, the warmest 1 January to 3 October on record, in 134 years since 1892 (2017 excluded: 54 of 276 days missing); provisional.
- 2026 so far averaged 52.9°F in Sheridan, WY, the warmest 1 January to 3 October since 1983, 2nd warmest of 119.
Counties
| County | Day | The day in the county average |
|---|---|---|
| Laramie County, WY Notable | the warmest 29 September night in the county average since the data begin in 1951 | |
| Uinta County, WY Notable | the wettest 29 September in the county average since 2014 | |
| Albany County, WY | the warmest 29 September in the county average since 2025 | |
| Big Horn County, WY | the warmest 29 September in the county average since 2025 | |
| Campbell County, WY | the warmest 29 September in the county average since 2025 | |
| Carbon County, WY | the warmest 29 September in the county average since 2025 | |
| Converse County, WY | the warmest 29 September in the county average since 2025 | |
| Crook County, WY | the warmest 29 September in the county average since 2025 | |
| Fremont County, WY | the warmest 29 September in the county average since 2025 | |
| Goshen County, WY | the warmest 29 September in the county average since 2025 | |
| Hot Springs County, WY | the warmest 29 September in the county average since 2025 | |
| Johnson County, WY | the warmest 29 September in the county average since 2025 | |
| Lincoln County, WY | the warmest 29 September in the county average since 2025 | |
| Natrona County, WY | the warmest 29 September in the county average since 2025 | |
| Niobrara County, WY | the warmest 29 September in the county average since 2025 | |
| Park County, WY | the warmest 29 September in the county average since 2025 | |
| Platte County, WY | the warmest 29 September in the county average since 2025 | |
| Sheridan County, WY | the warmest 29 September in the county average since 2025 | |
| Sublette County, WY | the warmest 29 September in the county average since 2025 | |
| Sweetwater County, WY | the warmest 29 September in the county average since 2025 | |
| Teton County, WY | the warmest 29 September in the county average since 2025 | |
| Washakie County, WY | the warmest 29 September in the county average since 2025 | |
| Weston County, WY | the warmest 29 September in the county average since 2025 |
Records set this year
- RecordFriday 21 August 2026: a high of 99°F in Casper, WY, the warmest 21 August on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordSunday 9 August 2026: a high of 96°F in Lander, WY, the warmest 9 August on record, in 135 years since 1891 (no value for 2017); provisional, awaiting the National Weather Service report.
- RecordSaturday 8 August 2026: a high of 97°F in Cheyenne, WY, the warmest 8 August on record, in 154 years since 1873; provisional, awaiting the National Weather Service report.
- RecordSaturday 8 August 2026: a high of 99°F in Casper, WY, the warmest 8 August on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordSunday 2 August 2026: a high of 101°F in Lander, WY, the warmest 2 August on record, in 135 years since 1891 (no value for 2017); provisional, awaiting the National Weather Service report.
- RecordSunday 2 August 2026: a high of 103°F in Casper, WY, the warmest 2 August on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordSaturday 1 August 2026: a high of 104°F in Sheridan, WY, the warmest 1 August on record, in 120 years since 1907; provisional, awaiting the National Weather Service report.
- RecordSunday 26 July 2026: a high of 99°F in Lander, WY, the warmest 26 July on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordSunday 26 July 2026: a high of 99°F in Cheyenne, WY, the warmest 26 July on record, in 154 years since 1873; provisional, awaiting the National Weather Service report.
- RecordSunday 26 July 2026: a high of 102°F in Casper, WY, the warmest 26 July on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordSaturday 25 July 2026: a high of 104°F in Sheridan, WY, the warmest 25 July on record, in 120 years since 1907; provisional, awaiting the National Weather Service report.
- RecordSaturday 25 July 2026: a high of 99°F in Lander, WY, the warmest 25 July on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordSaturday 25 July 2026: a high of 97°F in Cheyenne, WY, the warmest 25 July on record, in 154 years since 1873; provisional, awaiting the National Weather Service report.
- RecordSaturday 25 July 2026: a high of 102°F in Casper, WY, the warmest 25 July on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordSunday 12 July 2026: a high of 109°F in Sheridan, WY, the warmest 12 July on record, in 120 years since 1907; provisional, awaiting the National Weather Service report.
- RecordSunday 12 July 2026: a high of 102°F in Lander, WY, the warmest 12 July on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordMonday 15 June 2026: a low of 30°F in Casper, WY, the coldest 15 June night on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordSaturday 6 June 2026: a high of 97°F in Sheridan, WY, the warmest 6 June on record, in 120 years since 1907; provisional, awaiting the National Weather Service report.
- RecordSaturday 6 June 2026: a high of 93°F in Lander, WY, the warmest 6 June on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordSaturday 6 June 2026: a high of 96°F in Casper, WY, the warmest 6 June on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordTuesday 19 May 2026: a low of 21°F in Sheridan, WY, the coldest 19 May night on record, in 120 years since 1907; provisional, awaiting the National Weather Service report.
- RecordTuesday 19 May 2026: a low of 26°F in Casper, WY, the coldest 19 May night on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordWednesday 13 May 2026: a high of 95°F in Sheridan, WY, the warmest 13 May on record, in 120 years since 1907; provisional, awaiting the National Weather Service report.
- RecordWednesday 13 May 2026: a high of 89°F in Lander, WY, the warmest 13 May on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordWednesday 13 May 2026: a high of 92°F in Casper, WY, the warmest 13 May on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordMonday 11 May 2026: a high of 85°F in Casper, WY, the warmest 11 May on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordWednesday 6 May 2026: a low of 16°F in Sheridan, WY, the coldest 6 May night on record, in 120 years since 1907; provisional, awaiting the National Weather Service report.
- RecordWednesday 6 May 2026: a low of 18°F in Casper, WY, the coldest 6 May night on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordTuesday 5 May 2026: a low of 22°F in Sheridan, WY, the coldest 5 May night on record, in 120 years since 1907; provisional, awaiting the National Weather Service report.
- RecordMonday 30 March 2026: a high of 76°F in Casper, WY, the warmest 30 March on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordSunday 29 March 2026: a high of 74°F in Lander, WY, the warmest 29 March on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordSunday 29 March 2026: a high of 74°F in Cheyenne, WY, the warmest 29 March on record, in 154 years since 1873; provisional, awaiting the National Weather Service report.
- RecordSunday 29 March 2026: a high of 76°F in Casper, WY, the warmest 29 March on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordSaturday 28 March 2026: a high of 74°F in Lander, WY, the warmest 28 March on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordSaturday 28 March 2026: a high of 76°F in Cheyenne, WY, the warmest 28 March on record, in 154 years since 1873; provisional, awaiting the National Weather Service report.
- RecordWednesday 25 March 2026: a high of 78°F in Sheridan, WY, the warmest 25 March on record, in 119 years since 1908; provisional, awaiting the National Weather Service report.
- RecordWednesday 25 March 2026: a high of 81°F in Lander, WY, the warmest 25 March on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordWednesday 25 March 2026: a high of 82°F in Cheyenne, WY, the warmest 25 March on record, in 154 years since 1873; provisional, awaiting the National Weather Service report.
- RecordWednesday 25 March 2026: a high of 82°F in Casper, WY, the warmest 25 March on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordTuesday 24 March 2026: a high of 74°F in Lander, WY, the warmest 24 March on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordTuesday 24 March 2026: a high of 74°F in Cheyenne, WY, the warmest 24 March on record, in 154 years since 1873; provisional, awaiting the National Weather Service report.
- RecordTuesday 24 March 2026: a high of 77°F in Casper, WY, the warmest 24 March on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordSaturday 21 March 2026: a high of 83°F in Sheridan, WY, the warmest 21 March on record, in 119 years since 1908; provisional, awaiting the National Weather Service report.
- RecordSaturday 21 March 2026: a high of 82°F in Lander, WY, the warmest 21 March on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordSaturday 21 March 2026: a high of 83°F in Cheyenne, WY, the warmest 21 March on record, in 154 years since 1873; provisional, awaiting the National Weather Service report.
- RecordSaturday 21 March 2026: a high of 83°F in Casper, WY, the warmest 21 March on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordFriday 20 March 2026: a high of 81°F in Sheridan, WY, the warmest 20 March on record, in 119 years since 1908; provisional, awaiting the National Weather Service report.
- RecordFriday 20 March 2026: a high of 78°F in Lander, WY, the warmest 20 March on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordFriday 20 March 2026: a high of 79°F in Cheyenne, WY, the warmest 20 March on record, in 154 years since 1873; provisional, awaiting the National Weather Service report.
- RecordFriday 20 March 2026: a high of 81°F in Casper, WY, the warmest 20 March on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordThursday 19 March 2026: a high of 81°F in Sheridan, WY, the warmest 19 March on record, in 119 years since 1908; provisional, awaiting the National Weather Service report.
- RecordThursday 19 March 2026: a high of 80°F in Lander, WY, the warmest 19 March on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordThursday 19 March 2026: a high of 79°F in Cheyenne, WY, the warmest 19 March on record, in 154 years since 1873; provisional, awaiting the National Weather Service report.
- RecordThursday 19 March 2026: a high of 81°F in Casper, WY, the warmest 19 March on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordWednesday 18 March 2026: a high of 78°F in Sheridan, WY, the warmest 18 March on record, in 119 years since 1908; provisional, awaiting the National Weather Service report.
- RecordWednesday 18 March 2026: a high of 75°F in Lander, WY, the warmest 18 March on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordWednesday 18 March 2026: a high of 78°F in Casper, WY, the warmest 18 March on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordSunday 8 March 2026: a high of 70°F in Sheridan, WY, the warmest 8 March on record, in 119 years since 1908; provisional, awaiting the National Weather Service report.
- RecordSaturday 7 February 2026: a high of 60°F in Lander, WY, the warmest 7 February on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordSaturday 7 February 2026: a high of 61°F in Casper, WY, the warmest 7 February on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordFriday 6 February 2026: a high of 57°F in Lander, WY, the warmest 6 February on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordThursday 5 February 2026: a high of 72°F in Sheridan, WY, the warmest 5 February on record, in 119 years since 1908; provisional, awaiting the National Weather Service report.
- RecordThursday 5 February 2026: a high of 64°F in Lander, WY, the warmest 5 February on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordThursday 5 February 2026: a high of 64°F in Casper, WY, the warmest 5 February on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordThursday 15 January 2026: a high of 56°F in Casper, WY, the warmest 15 January on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordWednesday 14 January 2026: a high of 60°F in Lander, WY, the warmest 14 January on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordWednesday 14 January 2026: a high of 57°F in Casper, WY, the warmest 14 January on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- RecordTuesday 13 January 2026: a high of 61°F in Lander, WY, the warmest 13 January on record, in 135 years since 1892; provisional, awaiting the National Weather Service report.
- RecordTuesday 13 January 2026: a high of 55°F in Casper, WY, the warmest 13 January on record, in 87 years since 1940; provisional, awaiting the National Weather Service report.
- Records set this year not listed
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