Climate and monthly weather forecastSalem, MO
Climate and monthly weather forecast
Weather in January
January, the same as December, is a wintry winter month in Salem, Missouri, with an average temperature ranging between max 39.9°F (4.4°C) and min 24.8°F (-4°C). Salem's coldest month, January, generally records average temperatures ranging from a high of 39.9°F (4.4°C) to a low of 24.8°F (-4°C). Weather in January »Weather in February
February, the last month of the winter in Salem, is a frosty month, with an average temperature fluctuating between 28.4°F (-2°C) and 44.2°F (6.8°C). Salem registers an average high-temperature of a chilly 44.2°F (6.8°C) at the commencement of February, closely related to the preceding month. Weather in February »Weather in March
March, the first month of the spring in Salem, is a fresh month, with temperature in the range of an average low of 37.9°F (3.3°C) and an average high of 54.7°F (12.6°C). Entering March, Salem sees a temperature rise, with the average high-temperature advancing from February's chilly 44.2°F (6.8°C) to a cool 54.7°F (12.6°C). Weather in March »Weather in April
April in Salem, Missouri, is a refreshing spring month, with temperature in the range of an average high of 65.8°F (18.8°C) and an average low of 46.9°F (8.3°C). In Salem, stepping into April brings a temperature increase, moving up from March's fresh 54.7°F (12.6°C) to a refreshing 65.8°F (18.8°C). Weather in April »Weather in May
The last month of the spring, May, is a warm month in Salem, Missouri, with an average temperature ranging between max 75.7°F (24.3°C) and min 55.9°F (13.3°C). In Salem, the average high-temperature in May increases from a comfortable 65.8°F (18.8°C) in April to a moderately hot 75.7°F (24.3°C). Weather in May »Weather in June
The first month of the summer, June, is also a moderately hot month in Salem, Missouri, with an average temperature ranging between min 64.6°F (18.1°C) and max 85.6°F (29.8°C). The shift into June is accompanied by a temperature increase, with the average high-temperature rising from a moderately hot 75.7°F (24.3°C) in May to a still warm 85.6°F (29.8°C). Weather in June »Weather in July
July is a hot summer month in Salem, Missouri, with an average temperature varying between 67.1°F (19.5°C) and 88.5°F (31.4°C). In Salem, July is identified by the highest average temperatures, reaching a peak of 88.5°F (31.4°C) and a low of 67.1°F (19.5°C). The heat index value for July is estimated at a blistering 104°F (40°C). Weather in July »Weather in August
August, the last month of the summer in Salem, is another hot month, with an average temperature varying between 86.5°F (30.3°C) and 65.5°F (18.6°C). August's arrival brings an average high-temperature of a still hot 86.5°F (30.3°C), slightly deviating from July's 88.5°F (31.4°C). Weather in August »Weather in September
September, the first month of the autumn in Salem, is still a warm month, with an average temperature ranging between min 58.6°F (14.8°C) and max 79.7°F (26.5°C). With the onset of September, the average high-temperature subtly recedes from August's tropical 86.5°F (30.3°C) to a warm 79.7°F (26.5°C). Weather in September »Weather in October
October, like September, in Salem, Missouri, is another refreshing autumn month, with temperature in the range of an average low of 47.7°F (8.7°C) and an average high of 66°F (18.9°C). As September transitions into October, Salem sees a drop in the average high-temperature, transitioning from a moderately hot 79.7°F (26.5°C) to an enjoyable 66°F (18.9°C). Weather in October »Weather in November
November, the last month of the autumn in Salem, is another cool month, with an average temperature ranging between min 37.2°F (2.9°C) and max 53.4°F (11.9°C). Salem's weather in November involves a decrease in the average high-temperature, moving down from October's comfortable 66°F (18.9°C) to a cool 53.4°F (11.9°C). Weather in November »Weather in December
December, the first month of the winter in Salem, is still a chilly month, with an average temperature varying between 43.5°F (6.4°C) and 29.7°F (-1.3°C). With December's arrival, Salem's weather changes as the average high-temperature falls from a cool 53.4°F (11.9°C) in November to a chilly 43.5°F (6.4°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Salem, MO
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (39.9°F).
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure
Salem, MO
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Salem, MO
- Average wind speed in January:
8.3mph - Average wind speed in February:
8.1mph - Average wind speed in March:
8mph - Average wind speed in April:
8mph - Average wind speed in May:
6.8mph - Average wind speed in June:
6.1mph
- Average wind speed in July:
5.3mph - Average wind speed in August:
5.3mph - Average wind speed in September:
5.6mph - Average wind speed in October:
6.9mph - Average wind speed in November:
7.6mph - Average wind speed in December:
7.8mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity
Salem, MO
The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Salem, MO
- Average rainfall in January:
2.13" - Average rainfall in February:
2.05" - Average rainfall in March:
3.07" - Average rainfall in April:
4.06" - Average rainfall in May:
4.13" - Average rainfall in June:
3.23"
- Average rainfall in July:
3.27" - Average rainfall in August:
3.07" - Average rainfall in September:
1.93" - Average rainfall in October:
2.72" - Average rainfall in November:
2.05" - Average rainfall in December:
2.28"
The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days
Salem, MO
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
8.5 days - Average rainfall days in March:
14.4 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
17 days - Average rainfall days in August:
16.3 days - Average rainfall days in September:
11.8 days - Average rainfall days in October:
10.3 days - Average rainfall days in November:
9.5 days - Average rainfall days in December:
8.2 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (7.8 days).
Average snowfall
Salem, MO
The month with the highest snowfall is February (4.25").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Salem, MO
- Average snowfall days in January:
6.8 days - Average snowfall days in February:
6.8 days - Average snowfall days in March:
3.5 days - Average snowfall days in April:
0.5 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.2 days - Average snowfall days in November:
1.6 days - Average snowfall days in December:
4.5 days
The months with the highest number of snowfall days are January and February (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Salem, MO
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 42min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 36min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
4h and 48min - Average sunshine in February:
4h and 42min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 12min - Average sunshine in May:
8h and 54min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
10h and 12min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 18min - Average sunshine in October:
5h and 48min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 54min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days
Salem, MO
- Average sunshine days in January:
17.4 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
13.6 days - Average sunshine days in April:
13.6 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
12.3 days - Average sunshine days in September:
14.8 days - Average sunshine days in October:
18.9 days - Average sunshine days in November:
18.4 days - Average sunshine days in December:
18.2 days
The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is July (11.3 days).
Average UV index
Salem, MO
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Salem, MO
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility
Salem, MO
The months with the highest visibility are February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are January, May, July, August and September (5mi).





