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Green County, WI

: September 2026 so far averaged 66°F in Green County, WI, the warmest 1 to 29 September in the county average since 2019, tied 6th warmest of 76 (with 1998) (county average from NOAA gridded data, 1951 to 2026).

Last updated . This page normally updates every day; the latest update is late.

High
77.2°F
Warmest since 2025
13th warmest of 76
Low
48.2°F
Warmest since 2025
31st warmest of 76

No measurable precipitation in the county average of Green County, WI for 4 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).

Every 29 September high of the county average in Green County, WI since 1951: 77.2°F in 2026; the highest is 89.4°F, in 1953.
2025: 82.9°F1953: 89.4°F2026: 77.2°F 2026 77.2°F 1953 89.4°F since 2025 1951 2026
  • Normal range, 55.8 to 79.7°F
Every year as a table

Every 29 September low of the county average in Green County, WI since 1951: 48.2°F in 2026; the lowest is 26.8°F, in 1984.

YearHigh, °FLow, °F
202677.248.2
202582.951.6
202479.455.4
202369.253
202259.234.4
202179.548.6
202059.541.8
201963.852.7
201855.435.2
201772.543.8
201661.950
201580.156.8
201481.752.2
201380.546.6
201270.737.9
201169.947
201071.245.5
200959.645.2
200864.551.4
200774.946.1
200657.839.5
200565.438.4
200465.637
200355.735.4
200276.948.8
200159.542.1
200069.342.8
199955.844
19987650.1
199772.851.9
19966348.9
199579.749.6
199463.239.7
199355.238.7
199256.131.5
199164.533.4
199065.444.5
198972.440.9
198866.152.9
198773.849.5
198675.461.4
198570.748.2
198453.326.8
198381.652.2
198275.851.4
198161.739
198064.144.8
197978.851.9
19786742
197768.649.5
197664.941
197567.844.9
197467.241.6
197365.358.2
197265.238.9
197181.851.4
197067.836.3
196966.442.2
196866.246.5
196751.930.5
196661.649.5
196571.153.4
196466.533.9
196362.941.4
196263.632.1
196158.732.7
196063.547.6
195963.844.4
195868.541.8
195767.831.4
195673.553.1
195571.551.7
195476.158.9
195389.454.6
195277.848.7
19515730.4

The month

August 2026 averaged 70°F in Green County, WI, the warmest August in the county average since 2024, tied 63rd warmest of 132 (with 1956 and 1905) (county average from NOAA's monthly county data, 1895 to 2026).

The month in words
  • Tuesday 29 September 2026: a high of 77.2°F averaged over Green County, WI, the warmest 29 September in the county average since 2025, 13th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: a low of 48.2°F averaged over Green County, WI, the warmest 29 September night in the county average since 2025, tied 31st warmest of 76 (with 1985) (county average from NOAA gridded data, 1951 to 2026).
Days of the month without a value
0

Nearby

Madison, WI 34.7 mi, the nearest city with its own station