Annual mean 10°C · wettest around May · prevailing wind SW
Warmest
26.6 °C
Coldest
-3.3 °C
Wettest
51%
Windiest
5.9 m/s
Prevailing
SW
4.7 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 Harvard over the whole year is 10°C. July is the hottest month, with highs of about 26°C; January is the coldest, with lows of about -6°C. Harvard has no sharply defined rainy season: the chance of rain on a given day runs from 48% in February, the driest month, to 57% in May, the wettest. Winds in Harvard are highest in April, averaging 4.3 m/s (15 km/h), and lightest in August, at 2.6 m/s (9 km/h). The prevailing wind is from the SW. The clearest skies in Harvard come in July, when the sky is typically 38% covered; January is the cloudiest month, at 62%.
Month by month Harvard 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
-3°C
-6°C
-9°C
50%
62%
4.0 m/s
0
0
1
February
-0°C
-5°C
-6°C
48%
50%
4.2 m/s
1
0
6
March
6°C
0°C
0°C
54%
54%
4.2 m/s
2
0
17
April
11°C
5°C
6°C
54%
54%
4.3 m/s
16
1
42
May
18°C
12°C
15°C
57%
50%
3.6 m/s
47
11
62
June
25°C
18°C
24°C
55%
40%
3.3 m/s
61
38
41
July
26°C
20°C
27°C
55%
38%
2.7 m/s
54
57
22
August
26°C
18°C
26°C
55%
40%
2.6 m/s
61
51
27
September
23°C
15°C
21°C
55%
42%
2.9 m/s
66
29
54
October
15°C
8°C
11°C
56%
48%
3.5 m/s
32
4
58
November
7°C
2°C
2°C
53%
51%
3.8 m/s
7
0
23
December
1°C
-2°C
-5°C
51%
58%
3.9 m/s
0
0
5
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 Harvard weather by season
Year round, Harvard has days of about -3°C at their warmest in January, its coolest month, and 26°C in July, its warmest; the coolest hours of the day run from -6°C to 20°C through the year, and the average temperature over the year is 10°C around the clock. Rain is most likely around May and least likely around February. 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.
Harvard weather in winterDecember to February
High -1°CLow -4°CRain 50%
Winter in Harvard has typical daily highs of about -1°C and lows of about -4°C, with a 50% chance of rain on a given day.
Harvard weather in springMarch to May
High 12°CLow 5°CRain 55%
Spring in Harvard has typical daily highs of about 12°C and lows of about 5°C, with a 55% chance of rain on a given day.
Harvard weather in summerJune to August
High 26°CLow 18°CRain 55%
Summer in Harvard has typical daily highs of about 26°C and lows of about 18°C, with a 55% chance of rain on a given day.
Harvard weather in autumnSeptember to November
High 15°CLow 8°CRain 55%
Autumn in Harvard has typical daily highs of about 15°C and lows of about 8°C, with a 55% chance of rain on a given day.
When is the rainy season in Harvard?
Harvard has no sharply defined rainy season: the chance of rain on a given day runs from 48% in February, the driest month, to 57% in May, the wettest.
What time of year is Harvard windiest?
Winds in Harvard are highest in April, averaging 4.3 m/s (15 km/h), and lightest in August, at 2.6 m/s (9 km/h). The prevailing wind is from the SW.
What is the average temperature in Harvard year round?
The average temperature in Harvard over the whole year is 10°C. July is the hottest month, with highs of about 26°C; January is the coldest, with lows of about -6°C.