Winston weather by month
What a typical year looks like in Winston, Missouri: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Cameron, 17 km from Winston; records cover 2005–2026.
The year at a glance
- Precipitation a year
- 39.1 in993 mm
- Snow a year
- Rare
- Last spring freeze
- Rare
- First fall freeze
- Oct 26
- Heating degree days
- 5,672
- Cooling degree days
- 1,173
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −1°−18° (heating, 99%) and 96°36° (cooling, 1%).
Month by month
Winston in January
Highs average 35°2° and lows 15°−9°, with 1.1 in29 mm of precipitation in a typical January.
- Record high
- 66°19° (2026)
- Record low
- −15°−26° (2024)
- Heating degree days
- 1235
- Cooling degree days
- 0
Winston in February
Highs average 40°5° and lows 19°−7°, with 1.3 in33 mm of precipitation in a typical February.
- Record high
- 77°25° (2024)
- Record low
- −14°−26° (2021)
- Heating degree days
- 987
- Cooling degree days
- 0
Winston in March
Highs average 52°11° and lows 31°−1°, with 2.5 in64 mm of precipitation in a typical March.
- Record high
- 91°33° (2026)
- Record low
- −3°−19° (2019)
- Heating degree days
- 732
- Cooling degree days
- 0
Winston in April
Highs average 63°17° and lows 40°4°, with 3.7 in94 mm of precipitation in a typical April.
- Record high
- 85°29° (2020)
- Record low
- 14°−10° (2018)
- Heating degree days
- 408
- Cooling degree days
- 8
Winston in May
Highs average 74°23° and lows 53°12°, with 5.3 in135 mm of precipitation in a typical May.
- Record high
- 96°36° (2018)
- Record low
- 36°2° (2020)
- Heating degree days
- 136
- Cooling degree days
- 78
Winston in June
Highs average 83°28° and lows 63°17°, with 4.7 in119 mm of precipitation in a typical June.
- Record high
- 98°37° (2024)
- Record low
- 50°10° (2019)
- Heating degree days
- 4
- Cooling degree days
- 245
Winston in July
Highs average 87°31° and lows 67°19°, with 4.6 in118 mm of precipitation in a typical July.
- Record high
- 101°38° (2018)
- Record low
- 51°11° (2023)
- Heating degree days
- 0
- Cooling degree days
- 377
Winston in August
Highs average 86°30° and lows 65°18°, with 4.2 in107 mm of precipitation in a typical August.
- Record high
- 99°37° (2018)
- Record low
- 49°9° (2025)
- Heating degree days
- 1
- Cooling degree days
- 317
Winston in September
Highs average 79°26° and lows 56°13°, with 4.2 in108 mm of precipitation in a typical September.
- Record high
- 99°37° (2026)
- Record low
- 43°6° (2020)
- Heating degree days
- 70
- Cooling degree days
- 129
Winston in OctoberThis month
Highs average 66°19° and lows 44°7°, with 2.9 in74 mm of precipitation in a typical October.
- Record high
- 91°33° (2023)
- Record low
- 22°−6° (2022)
- Heating degree days
- 327
- Cooling degree days
- 18
Winston in November
Highs average 52°11° and lows 32°0°, with 2.7 in68 mm of precipitation in a typical November.
- Record high
- 76°24° (2020)
- Record low
- 5°−15° (2019)
- Heating degree days
- 702
- Cooling degree days
- 1
Winston in December
Highs average 40°4° and lows 21°−6°, with 1.8 in45 mm of precipitation in a typical December.
- Record high
- 73°23° (2021)
- Record low
- −9°−23° (2022)
- Heating degree days
- 1070
- Cooling degree days
- 0