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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, the same as December, is an icy winter month in Wheaton, Maryland, with an average temperature varying between 39°F (3.9°C) and 26.2°F (-3.2°C). January, recording an average high temperature of 39°F (3.9°C) and a low temperature of 26.2°F (-3.2°C), is Wheaton's coldest month. Weather in January »
Weather in February
February, the last month of the winter in Wheaton, is a chilly month, with an average temperature fluctuating between 28.8°F (-1.8°C) and 43.9°F (6.6°C). Entering February, Wheaton's average high-temperature reads a chilly 43.9°F (6.6°C), indicating a close resemblance to the previous month's climate. Weather in February »
Weather in March
March, the first month of the spring in Wheaton, is a fresh month, with an average temperature varying between 52°F (11.1°C) and 36.1°F (2.3°C). As February gives way to March, the average high-temperature displays a slight ascent, adjusting from a frosty 43.9°F (6.6°C) to a cool 52°F (11.1°C). Weather in March »
Weather in April
April in Wheaton, Maryland, is an enjoyable spring month, with an average temperature ranging between max 64.2°F (17.9°C) and min 46°F (7.8°C). Wheaton's transition into April is marked by a rise in the average high-temperature, advancing from a cool 52°F (11.1°C) in March to a refreshing 64.2°F (17.9°C). Weather in April »
Weather in May
May, the last month of the spring in Wheaton, is a moderately hot month, with an average temperature ranging between min 55.8°F (13.2°C) and max 73.9°F (23.3°C). Wheaton in May shows a temperature shift, moving from an average high of a refreshing 64.2°F (17.9°C) in April to a warm 73.9°F (23.3°C). Weather in May »
Weather in June
The first month of the summer, June, is also a moderately hot month in Wheaton, Maryland, with an average temperature varying between 81.7°F (27.6°C) and 63.9°F (17.7°C). As Wheaton welcomes June, the average high-temperature sees a modest rise, transitioning from 73.9°F (23.3°C) in May to a still moderately hot 81.7°F (27.6°C). Weather in June »
Weather in July
July in Wheaton, Maryland, is a hot summer month, with temperature in the range of an average low of 68.7°F (20.4°C) and an average high of 87.3°F (30.7°C). July is the warmest month of the year, registering average temperatures as high as 87.3°F (30.7°C) and as low as 68.7°F (20.4°C). For July, the heat index is calculated to be a sweltering 98.6°F (37°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Wheaton, Maryland, with an average temperature varying between 67.6°F (19.8°C) and 84.9°F (29.4°C). The shift into August finds Wheaton at an average high-temperature of a moderately hot 84.9°F (29.4°C), closely comparable to July's conditions. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Wheaton, Maryland, with an average temperature ranging between min 60.8°F (16°C) and max 78.1°F (25.6°C). With the arrival of September, Wheaton notices a mild change in the average high-temperature, sliding from August's 84.9°F (29.4°C) to a still moderately hot 78.1°F (25.6°C). Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Wheaton, Maryland, with an average temperature varying between 50.2°F (10.1°C) and 65.8°F (18.8°C). The move into October indicates a reduction in the average high-temperature, down from September's warm 78.1°F (25.6°C) to a refreshing 65.8°F (18.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Wheaton, Maryland, with an average temperature ranging between max 53.4°F (11.9°C) and min 38.8°F (3.8°C). With November's onset, the weather shows a temperature decrease, transitioning from a comfortable 65.8°F (18.8°C) in October to a fresh 53.4°F (11.9°C). Weather in November »
Weather in December
The first month of the winter, December, is also a frosty month in Wheaton, Maryland, with an average temperature ranging between min 32.9°F (0.5°C) and max 45.3°F (7.4°C). December's arrival aligns with a minor decrease in average high-temperatures, from November's fresh 53.4°F (11.9°C) to a frosty 45.3°F (7.4°C). Weather in December »
Updated: Aug 18, 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 is the coldest month?
Wheaton reaches its average lowest temperatures in January, measuring 39°F (3.9°C) at the peak and 26.2°F (-3.2°C) at the lowest.
What is the driest month?
January is the month with the least rainfall. Rain falls for 9.3 days and accumulates 2.17" (55mm) of precipitation.
How many days does it rain?
In Wheaton, during the entire year, the rain falls for 160.9 days and collects up to 32.99" (838mm) of precipitation.
When does it snow?
January through April, November and December are months with snowfall.
When does it snow the most in Wheaton?
The months with the most snowfall are January and March, with an average 3.03" (77mm) of accumulated snow.
How much does it snow?
Throughout the year, there are 17.1 snowfall days, and 10.2" (259mm) of snow is accumulated.
What is the month with the lowest UV index?
January, November 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?
With an average of 5h of sunshine, February has the least sunshine of the year.
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 are the most humid months?
The months with the highest humidity are May, October and December, with an average relative humidity of 76%.
When it does not snow?
In Wheaton, snow does not fall in May through October.
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 54min of daylight.
What part of the year is the hottest?
Wheaton's warmest weather arrives in July, when temperatures average a high of 87.3°F (30.7°C) and a low of 68.7°F (20.4°C).
What is the least humid month in Wheaton?
July is the least humid month, with an average relative humidity of 70%.
What month has the most sunshine?
With an average of 10.8h 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 17.1 days and typically aggregates up to 4.13" (105mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 30min of daylight.
Average temperature
Wheaton, MD
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure
Wheaton, MD
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.07"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
Wheaton, MD
- Average wind speed in January:
7.8mph - Average wind speed in February:
7.9mph - Average wind speed in March:
8.1mph - Average wind speed in April:
8mph - Average wind speed in May:
6.5mph - Average wind speed in June:
6mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
5.1mph - Average wind speed in September:
5.7mph - Average wind speed in October:
6.6mph - Average wind speed in November:
7mph - Average wind speed in December:
7.1mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity
Wheaton, MD
The months with the highest relative humidity are May, October and December (76%).
The month with the lowest relative humidity is July (70%).
Average rainfall
Wheaton, MD
- Average rainfall in January:
2.17" - Average rainfall in February:
2.2" - Average rainfall in March:
2.44" - Average rainfall in April:
2.87" - Average rainfall in May:
3.23" - Average rainfall in June:
2.68"
- Average rainfall in July:
3.23" - Average rainfall in August:
4.13" - Average rainfall in September:
2.24" - Average rainfall in October:
2.6" - Average rainfall in November:
2.44" - Average rainfall in December:
2.76"
The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (2.17").
Average rainfall days
Wheaton, MD
- Average rainfall days in January:
9.3 days - Average rainfall days in February:
9.5 days - Average rainfall days in March:
13.8 days - Average rainfall days in April:
16.3 days - Average rainfall days in May:
17.8 days - Average rainfall days in June:
15.6 days
- Average rainfall days in July:
17.5 days - Average rainfall days in August:
17.1 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
12.5 days - Average rainfall days in November:
8.8 days - Average rainfall days in December:
10.2 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (8.8 days).
Average snowfall
Wheaton, MD
The months with the highest snowfall are January and March (3.03").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Wheaton, MD
- Average snowfall days in January:
5.1 days - Average snowfall days in February:
5.1 days - Average snowfall days in March:
3.3 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:
0.5 days - Average snowfall days in December:
2.9 days
The months with the highest number of snowfall days are January and February (5.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Wheaton, 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 2min - 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 54min).
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 5min - Average sunshine in April:
8h and 5min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 4min - Average sunshine in December:
5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days
Wheaton, MD
- Average sunshine days in January:
18.1 days - Average sunshine days in February:
14.6 days - Average sunshine days in March:
14 days - Average sunshine days in April:
11.9 days - Average sunshine days in May:
11 days - Average sunshine days in June:
13 days
- Average sunshine days in July:
11 days - Average sunshine days in August:
12.3 days - Average sunshine days in September:
15.6 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
19.4 days - Average sunshine days in December:
17.5 days
The month with the most sunshine days is November (19.4 days).
The months with the least sunshine days are May and July (11 days).
Average UV index
Wheaton, 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, November and December (UV index 2).
Average cloud cover
Wheaton, MD
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility
Wheaton, 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).
Wheaton, Maryland, USA
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