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Day County, SD

Tuesday : 0.30 in of precipitation averaged over Day County, SD, the wettest 29 September in the county average since 1988, 3rd wettest of 76 (county average from NOAA gridded data, 1951 to 2026).

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

High
72.7°F
Warmest since 2025
19th warmest of 76
Low
56.9°F
Warmest since 2021
2nd warmest of 76
Precipitation
0.30 in
Wettest since 1988
3rd wettest of 76
Every 29 September low of the county average in Day County, SD since 1951: 56.9°F in 2026; the lowest is 27.2°F, in 1984.
2021: 60°F1984: 27.2°F2026: 56.9°F 2026 56.9°F 1984 27.2°F since 2021 1951 2026
  • Normal range, 32.3 to 49.2°F
Every year as a table

Every 29 September high of the county average in Day County, SD since 1951: 72.7°F in 2026; the highest is 87.7°F, in 2021.

YearHigh, °FLow, °F
202672.756.9
202582.854.6
202487.350.8
202377.156
202267.639.9
202187.760
202053.740.7
201955.735.9
20185230
201771.740.2
201662.237.5
201570.441
201478.249.8
201363.243.7
201280.846.3
201186.849.1
201072.145.8
200956.234.2
200872.740.6
200774.140
200652.531.9
200557.334.1
200464.136.7
200352.832.3
200253.342.7
200174.448.8
200081.645.7
199956.433.4
199878.950.2
19976948.9
199657.735.5
199579.456.9
19947039.2
19935633.5
199256.429.2
199168.338.3
199060.639.7
198979.442.6
198847.945.3
198760.442.4
198660.442.9
198542.531.1
198453.527.2
198368.144
198273.740.7
198171.339.1
198075.550.8
197968.741.3
19787244
197765.444.9
197664.731.4
197564.137.5
197459.432
197365.246.6
19725332
197165.937.9
197073.941.9
196972.447.6
196864.437.9
196769.133.1
196660.840
196541.539.7
196466.136.3
196366.136.1
196264.845.4
196158.837
196056.538.5
195949.638.2
195872.340.7
195775.248.2
195654.130.4
195572.246.8
19546744.9
195369.444.3
195278.545.6
19515832.2

The month

September 2026 so far averaged 64.2°F in Day County, SD, the warmest 1 to 29 September in the county average since 2024, 5th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).

The month in words
  • August 2026 averaged 68.4°F in Day County, SD, the warmest August in the county average since 2023, tied 60th warmest of 132 (with 1999, 1963 and 1962) (county average from NOAA's monthly county data, 1895 to 2026).
  • Tuesday 29 September 2026: a high of 72.7°F averaged over Day County, SD, the warmest 29 September in the county average since 2025, tied 19th warmest of 76 (with 2008) (county average from NOAA gridded data, 1951 to 2026).
  • Tuesday 29 September 2026: a low of 56.9°F averaged over Day County, SD, the warmest 29 September night in the county average since 2021, tied 2nd warmest of 76 (with 1995) (county average from NOAA gridded data, 1951 to 2026).
Days of the month without a value
0

Nearby

Sisseton, SD 35.8 mi, the nearest city with its own station