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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in Saint Charles, Maryland, is an icy winter month, with temperature in the range of an average high of 41.5°F (5.3°C) and an average low of 28.4°F (-2°C). In Saint Charles, January is the month with the lowest recorded average temperatures, measuring a high of 41.5°F (5.3°C) and a low of 28.4°F (-2°C). Weather in January »
Weather in February
The last month of the winter, February, is a frosty month in Saint Charles, Maryland, with an average temperature ranging between min 30.7°F (-0.7°C) and max 45.9°F (7.7°C). Saint Charles measures an average high-temperature of a frosty 45.9°F (7.7°C) in February, nearly consistent with the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a cool month in Saint Charles, Maryland, with an average temperature ranging between min 37.9°F (3.3°C) and max 53.6°F (12°C). March signals a minor shift in the average high-temperature, moving from February's chilly 45.9°F (7.7°C) to a fresh 53.6°F (12°C). Weather in March »
Weather in April
April is a refreshing spring month in Saint Charles, Maryland, with temperature in the range of an average low of 47.7°F (8.7°C) and an average high of 65.5°F (18.6°C). The shift into April is accompanied by a temperature increase, with the average high-temperature rising from a cool 53.6°F (12°C) in March to a refreshing 65.5°F (18.6°C). Weather in April »
Weather in May
The last month of the spring, May, is a warm month in Saint Charles, Maryland, with an average temperature fluctuating between 56.7°F (13.7°C) and 74.5°F (23.6°C). May's arrival is marked by an increase in the average high-temperature, moving from a refreshing 65.5°F (18.6°C) in April to a moderately hot 74.5°F (23.6°C). Weather in May »
Weather in June
June, the first month of the summer in Saint Charles, is also a moderately hot month, with temperature in the range of an average low of 64.2°F (17.9°C) and an average high of 82.2°F (27.9°C). June signals a minor shift in the average high-temperature, moving from May's 74.5°F (23.6°C) to a still warm 82.2°F (27.9°C). Weather in June »
Weather in July
July is a hot summer month in Saint Charles, Maryland, with an average temperature fluctuating between 68.9°F (20.5°C) and 87.4°F (30.8°C). Saint Charles, Maryland, reaches its highest average temperatures in July, measuring 87.4°F (30.8°C) at the peak and 68.9°F (20.5°C) at the lowest. July's heat index is calculated to be a torrid 100.4°F (38°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Saint Charles, Maryland, with an average temperature ranging between min 67.5°F (19.7°C) and max 85.1°F (29.5°C). With the onset of August, a modest change to a warm 85.1°F (29.5°C) from July's 87.4°F (30.8°C) is noted in high-temperature. Weather in August »
Weather in September
September, the first month of the autumn in Saint Charles, is still a warm month, with temperature in the range of an average low of 61.9°F (16.6°C) and an average high of 78.6°F (25.9°C). As August transitions into September, Saint Charles sees a gentle drop in the average high-temperature, transitioning from a moderately hot 85.1°F (29.5°C) to a still warm 78.6°F (25.9°C). Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Saint Charles, Maryland, with an average temperature varying between 66.9°F (19.4°C) and 51.3°F (10.7°C). The onset of October is marked by a decrease in temperature, transitioning from a moderately hot 78.6°F (25.9°C) in September to a comfortable 66.9°F (19.4°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Saint Charles, Maryland, with temperature in the range of an average high of 55°F (12.8°C) and an average low of 40.5°F (4.7°C). In Saint Charles, the beginning of November is marked by a lowered average high-temperature, shifting from October's enjoyable 66.9°F (19.4°C) to a cool 55°F (12.8°C). Weather in November »
Weather in December
December, the first month of the winter in Saint Charles, is still a chilly month, with an average temperature varying between 46.9°F (8.3°C) and 34.5°F (1.4°C). The average high-temperature shows a slight dip in December, from November's fresh 55°F (12.8°C) to a frosty 46.9°F (8.3°C). Weather in December »
Updated: Jun 4, 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
What month is the coldest?
Saint Charles's temperature records reveal January as the coldest month, marked by average highs of 41.5°F (5.3°C) and lows of 28.4°F (-2°C).
What is the least humid month?
January, March and April, with an average relative humidity of 73%, are the least humid months.
What is the driest month in Saint Charles?
The month with the least rainfall is January, when the rain falls for 9.3 days and typically collects 1.85" (47mm) of precipitation.
How much does it rain?
In Saint Charles, Maryland, during the entire year, the rain falls for 151.4 days and collects up to 29.33" (745mm) of precipitation.
When does it snow?
Months with snowfall are January through April, November and December.
When does it snow the most?
January is the month with the most snowfall in Saint Charles. Snow falls for 4.3 days and accumulates 2.32" (59mm) of snow.
How many days does it snow?
In Saint Charles, during the entire year, snow falls for 13.5 days and aggregates up to 7.24" (184mm) of snow.
When is the lowest UV index?
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the month with the least sunshine?
February and December, with an average of 5h of sunshine, are months with the least sunshine.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
What is the most humid month?
With an average relative humidity of 78%, May is the most humid month.
When it does not snow?
May through October are months without snowfall in Saint Charles.
When is the highest UV index?
May through August, with an average maximum UV index of 6, are months with the highest UV index.
When are the longest days?
The month with the longest days is June, with an average of 14h and 48min of daylight.
What is the hottest time of year?
July is the warmest month of the year in Saint Charles, registering average temperatures as high as 87.4°F (30.8°C) and as low as 68.9°F (20.5°C).
What month has the most sunshine?
With an average of 10.5h of sunshine, July has the most sunshine of the year.
What is the rainiest month?
The month with the most rainfall is August, when the rain falls for 15 days and typically aggregates up to 3.31" (84mm) of precipitation.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 30min of daylight.
Average temperature
Saint Charles, MD
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (41.5°F).
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure
Saint Charles, MD
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Saint Charles, MD
- Average wind speed in January:
7.4mph - Average wind speed in February:
7.6mph - Average wind speed in March:
7.8mph - Average wind speed in April:
7.8mph - Average wind speed in May:
6.5mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
5.2mph - Average wind speed in September:
5.8mph - Average wind speed in October:
6.7mph - Average wind speed in November:
6.8mph - Average wind speed in December:
6.7mph
The windiest months (with the highest average wind speed) are March and April (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity
Saint Charles, MD
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March and April (73%).
Average rainfall
Saint Charles, MD
- Average rainfall in January:
1.85" - Average rainfall in February:
2.09" - Average rainfall in March:
2.4" - Average rainfall in April:
2.4" - Average rainfall in May:
2.72" - Average rainfall in June:
2.52"
- Average rainfall in July:
3.11" - Average rainfall in August:
3.31" - Average rainfall in September:
2.05" - Average rainfall in October:
2.64" - Average rainfall in November:
1.97" - Average rainfall in December:
2.28"
The wettest month (with the highest rainfall) is August (3.31").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days
Saint Charles, MD
- Average rainfall days in January:
9.3 days - Average rainfall days in February:
9.8 days - Average rainfall days in March:
13.8 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
13.3 days
- Average rainfall days in July:
14.3 days - Average rainfall days in August:
15 days - Average rainfall days in September:
12.1 days - Average rainfall days in October:
12 days - Average rainfall days in November:
8.7 days - Average rainfall days in December:
11.5 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is November (8.7 days).
Average snowfall
Saint Charles, MD
The month with the highest snowfall is January (2.32").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Saint Charles, MD
- Average snowfall days in January:
4.3 days - Average snowfall days in February:
3.9 days - Average snowfall days in March:
2.7 days - Average snowfall days in April:
0.2 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:
0.4 days - Average snowfall days in December:
2 days
The month with the highest number of snowfall days is January (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Saint Charles, MD
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
5h and 1min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 4min - Average sunshine in April:
8h and 4min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 3min - Average sunshine in November:
5h and 4min - Average sunshine in December:
5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 0min).
Average sunshine days
Saint Charles, MD
- Average sunshine days in January:
17.7 days - Average sunshine days in February:
15.1 days - Average sunshine days in March:
14.7 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
11.4 days - Average sunshine days in June:
14.3 days
- Average sunshine days in July:
13.7 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
15.7 days - Average sunshine days in October:
17.4 days - Average sunshine days in November:
19.6 days - Average sunshine days in December:
16.9 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (11.4 days).
Average UV index
Saint Charles, MD
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 and December (UV index 2).
Average cloud cover
Saint Charles, MD
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility
Saint Charles, MD
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Saint Charles, Maryland, USA
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