Annual mean 14°C · wettest around December · prevailing wind W
Warmest
30.1 °C
Coldest
4.4 °C
Wettest
63%
Windiest
4.3 m/s
Prevailing
W
3.4 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Glenn Dale over the whole year is 14°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about 0°C. Glenn Dale has no sharply defined rainy season: the chance of rain on a given day runs from 42% in June, the driest month, to 52% in December, the wettest. Winds in Glenn Dale are highest in March, averaging 3.1 m/s (11 km/h), and lightest in August, at 2.0 m/s (7 km/h). The prevailing wind is from the W. The clearest skies in Glenn Dale come in November, when the sky is typically 28% covered; May is the cloudiest month, at 41%.
Month by month Glenn Dale climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
5°C
0°C
-0°C
44%
39%
2.7 m/s
2
0
13
February
7°C
3°C
2°C
50%
36%
2.6 m/s
4
0
24
March
11°C
5°C
6°C
49%
34%
3.1 m/s
13
0
42
April
17°C
10°C
13°C
46%
35%
3.0 m/s
38
5
65
May
21°C
15°C
19°C
47%
41%
2.4 m/s
62
20
62
June
27°C
20°C
27°C
42%
31%
2.4 m/s
52
52
25
July
29°C
23°C
31°C
49%
28%
2.1 m/s
17
59
3
August
28°C
22°C
29°C
51%
31%
2.0 m/s
35
62
10
September
24°C
19°C
25°C
47%
35%
2.0 m/s
65
42
37
October
19°C
12°C
17°C
44%
34%
2.1 m/s
58
12
71
November
12°C
6°C
8°C
48%
28%
2.3 m/s
18
1
53
December
7°C
3°C
3°C
52%
39%
2.2 m/s
2
0
25
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Glenn Dale weather by season
Year round, Glenn Dale has days of about 5°C at their warmest in January, its coolest month, and 29°C in July, its warmest; the coolest hours of the day run from 0°C to 23°C through the year, and the average temperature over the year is 14°C around the clock. Rain is most likely around December and least likely around June. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Glenn Dale weather in winterDecember to February
High 6°CLow 2°CRain 49%
Winter in Glenn Dale has typical daily highs of about 6°C and lows of about 2°C, with a 49% chance of rain on a given day.
Glenn Dale weather in springMarch to May
High 16°CLow 10°CRain 48%
Spring in Glenn Dale has typical daily highs of about 16°C and lows of about 10°C, with a 48% chance of rain on a given day.
Glenn Dale weather in summerJune to August
High 28°CLow 22°CRain 47%
Summer in Glenn Dale has typical daily highs of about 28°C and lows of about 22°C, with a 47% chance of rain on a given day.
Glenn Dale weather in autumnSeptember to November
High 19°CLow 12°CRain 46%
Autumn in Glenn Dale has typical daily highs of about 19°C and lows of about 12°C, with a 46% chance of rain on a given day.
When is the rainy season in Glenn Dale?
Glenn Dale has no sharply defined rainy season: the chance of rain on a given day runs from 42% in June, the driest month, to 52% in December, the wettest.
What time of year is Glenn Dale windiest?
Winds in Glenn Dale are highest in March, averaging 3.1 m/s (11 km/h), and lightest in August, at 2.0 m/s (7 km/h). The prevailing wind is from the W.
What is the average temperature in Glenn Dale year round?
The average temperature in Glenn Dale over the whole year is 14°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about 0°C.