Nashua, NH weather in August
August in Nashua: warm, with frequent rain. Highs 82°F, lows 59°F, about 11 wet days. This is the peak of the warm season in Nashua. A good month for most outdoor plans.
- Normal high
- 82°F
- Normal low
- 59°F
- Wet days
- 11
- 3.8 in total
- Muggy days
- 7
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 83°F | 80°F |
| Normal low | 61°F | 56°F |
| Chance of a wet day | 37% | 31% |
| Sunrise / sunset | 5:37 am / 8:06 pm | 6:09 am / 7:22 pm |
| Daylight | 14.5 h | 13.2 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical August day
- 6 am64°Fdew point 59°F
- 9 am72°Fdew point 60°F
- Noon79°Fdew point 58°F
- 3 pm80°Fdew point 58°F
- 6 pm77°Fdew point 59°F
- 9 pm70°Fdew point 60°F
NOAA hourly normals (local standard time) from Manchester Airport (12 mi away); average wind 5 mph; clear or few clouds in 58% of daytime hours, mostly cloudy or overcast in 31%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F8 of 31
- Hot dayshigh 90°F or more4 of 31
- Muggy daysdaily mean dew point 65°F or more7 of 31
- Wet daysat least 0.01 in of rain or melted snow11 of 31
- Notable rainat least 0.10 in6 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 3.8 in; a dry August brings about 2.3 in and a wet one about 4.7 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How August varies from year to year
- Warmest August, 1991-20202002: average high 86°F
- Coolest August2000: average high 77°F
- Wettest August1991: 9.2 in
- Driest August1996: 0.6 in
- Highest reading99°F (August 15, 2002)
- Lowest reading40°F (August 29, 1995)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 83°F | 82°F | 74°F |
| Normal low | 61°F | 59°F | 51°F |
| Wet days | 11 | 11 | 10 |
| Comfortable days | 5 | 8 | 16 |
| Daylight | 15.0 h | 13.9 h | 12.5 h |
Highs change by -1°F from July and -8°F into September.
Nearby alternatives in August
- Cooler: Kennebunkport, ME65 mi · high 76°F · 10 wet days
How Nashua ranks in August
- Normal high281st warmest of 378 cities; 1st of 4 in New Hampshire
- Wet days293rd driest of 378
- Comfortable days87th most of 341
What to pack for Nashua in August
- A rain jacket or umbrella – rain on about 11 days
Heating and cooling
August has 16 heating degree days and 185 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is Nashua in August?
The normal high is 82°F and the normal low is 59°F. From 1991 to 2020 the hottest August reading was 99°F (August 15, 2002).
Does it rain a lot in Nashua in August?
About 11 days in August have at least 0.01 in of precipitation, and the normal total is 3.8 in. The wettest August in 1991-2020 was in 1991 (9.2 in); the driest was in 1996 (0.6 in).
Is August a good time to visit Nashua?
August ranks 4th of 12 months on our comfort score for Nashua (61 out of 100). It has about 8 comfortable days and about 4 days at 90°F or hotter. The best months are May and September.
Where the numbers come from
- Temperature, rain, snowfall and snow depth: Hudson 1 Sse (USC00274234), 3.0 mi ENE of the city center, 185 ft . NOAA normals and daily records, 1991-2020.
- Frost dates: Nashua 2 Nnw (USC00275712), 1.8 mi N of the city center, 135 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Manchester Airport (USW00014710), 12 mi N of the city center, 225 ft (66 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Cloud cover: Concord Muni Airport (USW00014745), 30 mi N of the city center, 346 ft (187 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Manchester Airport (743945-14710), 12 mi N of the city center, 229 ft (70 ft higher than the city). Hourly observations, 1991-2020.