Annual mean 11°C · wettest around December · prevailing wind W
Warmest
27.5 °C
Coldest
0.0 °C
Wettest
20%
Windiest
4.8 m/s
Prevailing
W
3.9 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 Nashua over the whole year is 11°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -4°C. Nashua has no sharply defined rainy season: the chance of rain on a given day runs from 10% in September, the driest month, to 15% in December, the wettest. Winds in Nashua are highest in March, averaging 3.6 m/s (13 km/h), and lightest in August, at 2.3 m/s (8 km/h). The prevailing wind is from the W. The clearest skies in Nashua come in November, when the sky is typically 49% covered; May is the cloudiest month, at 59%.
Month by month Nashua 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
0°C
-4°C
-5°C
11%
57%
3.3 m/s
0
0
4
February
2°C
-3°C
-4°C
12%
55%
3.2 m/s
1
0
10
March
6°C
-0°C
1°C
12%
55%
3.6 m/s
3
0
21
April
12°C
5°C
7°C
15%
59%
3.4 m/s
15
1
49
May
19°C
11°C
15°C
11%
59%
3.0 m/s
48
10
71
June
24°C
17°C
23°C
10%
54%
2.7 m/s
71
31
52
July
27°C
20°C
27°C
11%
50%
2.5 m/s
47
57
21
August
27°C
18°C
26°C
10%
49%
2.3 m/s
62
50
30
September
22°C
14°C
21°C
10%
51%
2.3 m/s
71
24
62
October
16°C
9°C
13°C
13%
55%
2.4 m/s
41
3
73
November
9°C
3°C
4°C
13%
49%
2.9 m/s
9
0
31
December
3°C
-2°C
-2°C
15%
54%
2.8 m/s
0
0
8
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 Nashua weather by season
Year round, Nashua has days of about 0°C at their warmest in January, its coolest month, and 27°C in July, its warmest; the coolest hours of the day run from -4°C to 20°C through the year, and the average temperature over the year is 11°C around the clock. Rain is most likely around December and least likely around September. 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.
Nashua weather in winterDecember to February
High 2°CLow -3°CRain 13%
Winter in Nashua has typical daily highs of about 2°C and lows of about -3°C, with a 13% chance of rain on a given day.
Nashua weather in springMarch to May
High 12°CLow 6°CRain 12%
Spring in Nashua has typical daily highs of about 12°C and lows of about 6°C, with a 12% chance of rain on a given day.
Nashua weather in summerJune to August
High 26°CLow 18°CRain 11%
Summer in Nashua has typical daily highs of about 26°C and lows of about 18°C, with a 11% chance of rain on a given day.
Nashua weather in autumnSeptember to November
High 16°CLow 9°CRain 12%
Autumn in Nashua has typical daily highs of about 16°C and lows of about 9°C, with a 12% chance of rain on a given day.
When is the rainy season in Nashua?
Nashua has no sharply defined rainy season: the chance of rain on a given day runs from 10% in September, the driest month, to 15% in December, the wettest.
What time of year is Nashua windiest?
Winds in Nashua are highest in March, averaging 3.6 m/s (13 km/h), and lightest in August, at 2.3 m/s (8 km/h). The prevailing wind is from the W.
What is the average temperature in Nashua year round?
The average temperature in Nashua over the whole year is 11°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -4°C.