Climate
Nashua weather by month
Average highs, lows, rain and snow for every month, from 30 years of weather records.
Average temperatures
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Best time to visit: May, July, August, when highs are mild and rain is lightest.
Month by month
| Month | High | Low | Rain | Wet days |
|---|---|---|---|---|
| January | 35°F | 14°F | 3.0 in | – |
| February | 38°F | 16°F | 3.1 in | – |
| March | 45°F | 24°F | 4.1 in | – |
| April | 58°F | 35°F | 3.9 in | – |
| May | 69°F | 46°F | 3.6 in | – |
| June | 79°F | 56°F | 4.2 in | – |
| July | 85°F | 62°F | 3.6 in | – |
| August | 83°F | 60°F | 3.7 in | – |
| September | 75°F | 52°F | 4.2 in | – |
| October | 62°F | 39°F | 4.7 in | – |
| November | 51°F | 29°F | 3.7 in | – |
| December | 40°F | 20°F | 4.5 in | – |
NOAA U.S. Climate Normals 1991–2020, Nashua Cwsu, Nh Us (1.1 mi away, 180 ft). Wet days: days with at least 0.01 in of precipitation.
Questions
What is the hottest month in Nashua?
July, with an average high of 85°F and low of 62°F.
What is the coldest month in Nashua?
January, with an average low of 14°F and high of 35°F.
When does it rain most in Nashua?
October is the wettest month, averaging 4.7 in of precipitation; the year totals about 46.3 inches.
What is the best time to visit Nashua?
For mild weather (highs between 65°F and 85°F) with the least rain, May, July, August.
Where do these numbers come from?
NOAA’s 1991–2020 U.S. Climate Normals for the Nashua Cwsu weather station, 1.1 miles from downtown: 30-year averages, not a forecast.