Climate and monthly weather forecastCharleston, MO
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Charleston, Missouri, with an average temperature varying between 28.8°F (-1.8°C) and 41.5°F (5.3°C). With average high temperatures of 41.5°F (5.3°C) and lows of 28.8°F (-1.8°C), January is the coldest month. Weather in January »Weather in February
February, the last month of the winter in Charleston, is a chilly month, with temperature in the range of an average low of 32.5°F (0.3°C) and an average high of 46.2°F (7.9°C). Charleston's average high-temperature in February sits at a chilly 46.2°F (7.9°C), showing little difference from the previous month. Weather in February »Weather in March
March, the first month of the spring in Charleston, is a mild month, with an average temperature varying between 41.2°F (5.1°C) and 57°F (13.9°C). In Charleston, the average high-temperature in March increases from a chilly 46.2°F (7.9°C) in February to a moderate 57°F (13.9°C). Weather in March »Weather in April
April in Charleston, Missouri, is a comfortable spring month, with an average temperature varying between 67.8°F (19.9°C) and 50.5°F (10.3°C). The onset of April brings a rise in the average high-temperature, elevating from a moderate 57°F (13.9°C) in March to a comfortable 67.8°F (19.9°C). Weather in April »Weather in May
The last month of the spring, May, is a moderately hot month in Charleston, Missouri, with an average temperature varying between 60.3°F (15.7°C) and 76.6°F (24.8°C). May introduces a marginal temperature uplift, with average high-temperatures adjusting from April's comfortable 67.8°F (19.9°C) to a warm 76.6°F (24.8°C). Weather in May »Weather in June
The first month of the summer, June, is a hot month in Charleston, Missouri, with an average temperature fluctuating between 68.4°F (20.2°C) and 86°F (30°C). June sees a temperature increase, moving from a warm 76.6°F (24.8°C) in May to a tropical 86°F (30°C). Weather in June »Weather in July
July, like June, is a hot summer month in Charleston, Missouri, with an average temperature varying between 70.2°F (21.2°C) and 88.2°F (31.2°C). July, with average temperatures reaching a high of 88.2°F (31.2°C) and a low of 70.2°F (21.2°C), is the warmest month. During July, the heat index is calculated to be an extremely hot 104°F (40°C). Weather in July »Weather in August
The last month of the summer, August, is another tropical month in Charleston, Missouri, with an average temperature varying between 86.4°F (30.2°C) and 67.6°F (19.8°C). As Charleston transitions from July to August, the average high-temperatures adjust to a still hot 86.4°F (30.2°C), nearly the same as the previous 88.2°F (31.2°C). Weather in August »Weather in September
September, the first month of the autumn in Charleston, is also a moderately hot month, with temperature in the range of an average high of 81.7°F (27.6°C) and an average low of 62.2°F (16.8°C). The onset of September notes an average high-temperature of a warm 81.7°F (27.6°C), subtly shifted from August's 86.4°F (30.2°C). Weather in September »Weather in October
October, the same as September, in Charleston, Missouri, is another pleasant autumn month, with an average temperature varying between 69.4°F (20.8°C) and 51.4°F (10.8°C). The transition into October involves a decrease in the average high-temperature, falling from a moderately hot 81.7°F (27.6°C) in September to an agreeable 69.4°F (20.8°C). Weather in October »Weather in November
The last month of the autumn, November, is another mild month in Charleston, Missouri, with an average temperature varying between 40.8°F (4.9°C) and 55.6°F (13.1°C). November indicates a shift in the average high-temperature, from October's pleasant 69.4°F (20.8°C) to a moderate 55.6°F (13.1°C). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in Charleston, Missouri, with an average temperature fluctuating between 46.2°F (7.9°C) and 34°F (1.1°C). As November transitions into December, Charleston sees a drop in the average high-temperature, transitioning from a refreshing 55.6°F (13.1°C) to a frosty 46.2°F (7.9°C). Weather in December »Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Charleston, the lowest temperatures are generally noted in January, averaging a high of 41.5°F (5.3°C) and a low of 28.8°F (-1.8°C).
Throughout the year, in Charleston, there are 153 rainfall days, and 33.9" (861mm) of precipitation is accumulated.
Months with snowfall are January through April, November and December.
In Charleston, during the entire year, snow falls for 11.2 days and aggregates up to 4.69" (119mm) of snow.
January and December, with an average maximum UV index of 2, are months with the lowest UV index.
The month with the most snowfall is February, when snow falls for 3.6 days and typically aggregates up to 1.69" (43mm) of snow.
With an average of 4.7h of sunshine, February has the least sunshine of the year.
March and May, with an average relative humidity of 78%, are most humid months.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
The month with the most rainfall is April, when the rain falls for 14.7 days and typically aggregates up to 3.9" (99mm) of precipitation.
In Charleston, Missouri, snow does not fall in May through October.
The months with the highest UV index are May through August, with an average maximum UV index of 6.
The month with the longest days is June, with an average of 14h and 42min of daylight.
The months with the most sunshine are June and July, with an average of 10.7h of sunshine.
July, characterized by an average high temperature of 88.2°F (31.2°C) and a low temperature of 70.2°F (21.2°C), is generally the warmest month.
The month with the least rainfall is September, when the rain falls for 11.4 days and typically collects 1.22" (31mm) of precipitation.
The least humid month is October, with an average relative humidity of 69%.
December has the shortest days of the year, with an average of 9h and 42min of daylight.
Average temperature
Charleston, MO
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41.5°F).
The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure
Charleston, MO
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Charleston, MO
- Average wind speed in January:
9.3mph - Average wind speed in February:
9.3mph - Average wind speed in March:
9.3mph - Average wind speed in April:
9.2mph - Average wind speed in May:
7.8mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.4mph - Average wind speed in October:
7.8mph - Average wind speed in November:
8.5mph - Average wind speed in December:
8.6mph
The windiest months (with the highest average wind speed) are January, February and March (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity
Charleston, MO
The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall
Charleston, MO
- Average rainfall in January:
2.05" - Average rainfall in February:
3.31" - Average rainfall in March:
3.74" - Average rainfall in April:
3.9" - Average rainfall in May:
3.7" - Average rainfall in June:
2.91"
- Average rainfall in July:
2.68" - Average rainfall in August:
2.68" - Average rainfall in September:
1.22" - Average rainfall in October:
2.36" - Average rainfall in November:
2.76" - Average rainfall in December:
2.6"
The wettest month (with the highest rainfall) is April (3.9").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days
Charleston, MO
- Average rainfall days in January:
9.4 days - Average rainfall days in February:
10.8 days - Average rainfall days in March:
14.9 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
16.4 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
16.2 days - Average rainfall days in August:
13.7 days - Average rainfall days in September:
11.4 days - Average rainfall days in October:
10.4 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
10.1 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (9.4 days).
Average snowfall
Charleston, MO
The month with the highest snowfall is February (1.69").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Charleston, MO
- Average snowfall days in January:
3.2 days - Average snowfall days in February:
3.6 days - Average snowfall days in March:
1.7 days - Average snowfall days in April:
0.3 days - Average snowfall days in May:
0 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 days - Average snowfall days in November:
0.9 days - Average snowfall days in December:
1.5 days
The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Charleston, MO
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 54min - 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 24min - Average daylight in August:
13h and 30min - 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 42min
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 42min).
- Average sunshine in January:
4h and 54min - Average sunshine in February:
4h and 42min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 48min - Average sunshine in May:
9h and 24min - Average sunshine in June:
10h and 42min
- Average sunshine in July:
10h and 42min - Average sunshine in August:
10h and 30min - Average sunshine in September:
9h and 42min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 36min - Average sunshine in December:
5h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days
Charleston, MO
- Average sunshine days in January:
18.2 days - Average sunshine days in February:
13.5 days - Average sunshine days in March:
12.8 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
12.1 days - Average sunshine days in June:
12.9 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
15.1 days - Average sunshine days in September:
17.1 days - Average sunshine days in October:
19.5 days - Average sunshine days in November:
18.5 days - Average sunshine days in December:
18.5 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (12.1 days).
Average UV index
Charleston, 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 and December (UV index 2).
Average cloud cover
Charleston, MO
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility
Charleston, MO
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
