Salem weather by month
What a typical year looks like in Salem, Missouri: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Salem, 1 km from Salem; records cover 1903–2026.
The year at a glance
- Precipitation a year
- 47 in1194 mm
- Snow a year
- 1.3 in3.3 cm
- Last spring freeze
- Apr 9
- First fall freeze
- Oct 18
- Heating degree days
- 4,671
- Cooling degree days
- 1,167
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 4°−16° (heating, 99%) and 98°37° (cooling, 1%).
Month by month
Salem in January
Highs average 43°6° and lows 22°−6°, with 2.7 in68 mm of precipitation and 0.2 in0.5 cm of snow in a typical January.
- Record high
- 84°29° (1997)
- Record low
- −28°−33° (1912)
- Heating degree days
- 1017
- Cooling degree days
- 0
Salem in February
Highs average 48°9° and lows 26°−4°, with 2.8 in71 mm of precipitation and 0.4 in1 cm of snow in a typical February.
- Record high
- 85°29° (1911)
- Record low
- −23°−31° (1929)
- Heating degree days
- 791
- Cooling degree days
- 0
Salem in March
Highs average 57°14° and lows 34°1°, with 4 in103 mm of precipitation and 0.5 in1.3 cm of snow in a typical March.
- Record high
- 93°34° (2026)
- Record low
- −8°−22° (1948)
- Heating degree days
- 601
- Cooling degree days
- 4
Salem in April
Highs average 68°20° and lows 44°7°, with 5 in126 mm of precipitation in a typical April.
- Record high
- 93°34° (1909)
- Record low
- 13°−11° (1920)
- Heating degree days
- 290
- Cooling degree days
- 22
Salem in May
Highs average 76°24° and lows 53°12°, with 5.6 in143 mm of precipitation in a typical May.
- Record high
- 97°36° (1913)
- Record low
- 29°−2° (1960)
- Heating degree days
- 109
- Cooling degree days
- 88
Salem in June
Highs average 83°28° and lows 61°16°, with 4.2 in107 mm of precipitation in a typical June.
- Record high
- 112°44° (1911)
- Record low
- 30°−1° (2021)
- Heating degree days
- 14
- Cooling degree days
- 225
Salem in July
Highs average 88°31° and lows 65°18°, with 3.7 in93 mm of precipitation in a typical July.
- Record high
- 111°44° (1934)
- Record low
- 44°7° (1930)
- Heating degree days
- 1
- Cooling degree days
- 350
Salem in August
Highs average 87°30° and lows 63°17°, with 4.3 in110 mm of precipitation in a typical August.
- Record high
- 112°44° (1934)
- Record low
- 39°4° (1915)
- Heating degree days
- 3
- Cooling degree days
- 316
Salem in September
Highs average 80°26° and lows 56°13°, with 4 in102 mm of precipitation in a typical September.
- Record high
- 106°41° (1913)
- Record low
- 27°−3° (1989)
- Heating degree days
- 60
- Cooling degree days
- 135
Salem in OctoberThis month
Highs average 69°20° and lows 45°7°, with 3.7 in94 mm of precipitation in a typical October.
- Record high
- 94°34° (2023)
- Record low
- 16°−9° (1925)
- Heating degree days
- 278
- Cooling degree days
- 25
Salem in November
Highs average 56°13° and lows 35°2°, with 3.9 in100 mm of precipitation and 0.1 in0.3 cm of snow in a typical November.
- Record high
- 86°30° (1915)
- Record low
- −2°−19° (1950)
- Heating degree days
- 596
- Cooling degree days
- 2
Salem in December
Highs average 45°7° and lows 26°−3°, with 3 in75 mm of precipitation and 0.1 in0.3 cm of snow in a typical December.
- Record high
- 79°26° (1928)
- Record low
- −21°−29° (1989)
- Heating degree days
- 911
- Cooling degree days
- 0