Annual mean 14°C · wettest around December · prevailing wind W
Warmest
30.7 °C
Coldest
4.3 °C
Wettest
68%
Windiest
4.4 m/s
Prevailing
W
3.3 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Bethesda over the whole year is 14°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about -0°C. Bethesda has no sharply defined rainy season: the chance of rain on a given day runs from 51% in October, the driest month, to 61% in December, the wettest. Winds in Bethesda are highest in March, averaging 3.1 m/s (11 km/h), and lightest in July, at 1.8 m/s (6 km/h). The prevailing wind is from the W. The clearest skies in Bethesda come in November, when the sky is typically 38% covered; May is the cloudiest month, at 54%.
Month by month Bethesda 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
4°C
-0°C
-1°C
56%
50%
2.7 m/s
3
0
14
February
7°C
2°C
3°C
61%
47%
2.6 m/s
5
0
27
March
11°C
4°C
7°C
58%
45%
3.1 m/s
16
0
45
April
17°C
9°C
13°C
56%
47%
2.9 m/s
39
7
63
May
21°C
14°C
20°C
60%
54%
2.2 m/s
59
23
57
June
27°C
20°C
27°C
53%
42%
2.2 m/s
49
50
25
July
30°C
22°C
32°C
54%
39%
1.8 m/s
16
53
4
August
28°C
21°C
30°C
60%
42%
1.8 m/s
33
57
9
September
25°C
17°C
25°C
58%
45%
1.8 m/s
62
41
36
October
19°C
11°C
17°C
51%
44%
2.0 m/s
57
14
67
November
12°C
5°C
8°C
58%
38%
2.2 m/s
18
1
51
December
7°C
2°C
3°C
61%
50%
2.2 m/s
2
0
26
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 Bethesda weather by season
Year round, Bethesda has days of about 4°C at their warmest in January, its coolest month, and 30°C in July, its warmest; the coolest hours of the day run from -0°C to 22°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 October. 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.
Bethesda weather in winterDecember to February
High 6°CLow 1°CRain 60%
Winter in Bethesda has typical daily highs of about 6°C and lows of about 1°C, with a 60% chance of rain on a given day.
Bethesda weather in springMarch to May
High 17°CLow 9°CRain 58%
Spring in Bethesda has typical daily highs of about 17°C and lows of about 9°C, with a 58% chance of rain on a given day.
Bethesda weather in summerJune to August
High 28°CLow 21°CRain 56%
Summer in Bethesda has typical daily highs of about 28°C and lows of about 21°C, with a 56% chance of rain on a given day.
Bethesda weather in autumnSeptember to November
High 19°CLow 11°CRain 56%
Autumn in Bethesda has typical daily highs of about 19°C and lows of about 11°C, with a 56% chance of rain on a given day.
When is the rainy season in Bethesda?
Bethesda has no sharply defined rainy season: the chance of rain on a given day runs from 51% in October, the driest month, to 61% in December, the wettest.
What time of year is Bethesda windiest?
Winds in Bethesda are highest in March, averaging 3.1 m/s (11 km/h), and lightest in July, at 1.8 m/s (6 km/h). The prevailing wind is from the W.
What is the average temperature in Bethesda year round?
The average temperature in Bethesda over the whole year is 14°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about -0°C.