South Nashua, Nashua Weather
South Nashua weather this week
Over the next 7 days in South Nashua, daytime highs range from 6°C to 16°C and night-time lows from 0°C to 4°C. The warmest afternoon is likely on Thursday at 16°C, while the coolest night is expected on Tuesday night at 0°C. Temperatures trend warmer through the week, rising by about 8°C.
Rain is most likely today, with roughly 7.9 mm forecast in total over the week. Snowfall is in the forecast today; check road conditions before travelling.
Winds stay mostly light this week, peaking at about 21 km/h on Sunday. UV levels stay moderate or lower, peaking at 3. Average humidity is a comfortable 74% or so.
| Day | Conditions | High / Low | Rain chance | Rain | Max wind |
|---|---|---|---|---|---|
| Today (Friday) | Snow | 6° / 0° | 93% | 7.9 mm | 16 km/h |
| Tomorrow (Saturday) | Overcast | 6° / 0° | 10% | 0.0 mm | 13 km/h |
| Sunday | Overcast | 7° / 0° | 2% | 0.0 mm | 21 km/h |
| Monday | Partly cloudy | 9° / 0° | 0% | 0.0 mm | 16 km/h |
| Tuesday | Clear sky | 12° / 0° | 0% | 0.0 mm | 10 km/h |
| Wednesday | Overcast | 15° / 2° | 0% | 0.0 mm | 9 km/h |
| Thursday | Overcast | 16° / 4° | 0% | 0.0 mm | 10 km/h |
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Today's outlook for South Nashua
At 23:00 local time it is 0°C in South Nashua under clear skies, feeling like -3°C. Today's forecast high is 6°C and the low is 0°C, and the day overall looks snowy. Snow or rain is likely today (93% chance), so dress warmly and expect slippery roads. Winds are blowing at about 7 km/h from the north-west. Humidity is 87%.
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Climate of South Nashua: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), July is usually the hottest month in South Nashua, with average daytime highs around 27°C. January is the coolest, when nights typically fall to about -10°C and frost is possible on the coldest nights. That is a wide yearly range of roughly 37°C, so the seasons feel very different from each other.
The area receives about 1180 mm of rain in a typical year. Most of it falls from April, June, October and December, and October is the wettest month at roughly 123 mm.
For outdoor plans and travel, May and July to September usually offer the most comfortable weather in South Nashua, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | -1° | -10° | 73 mm | 89% |
| Feb | 1° | -9° | 83 mm | 88% |
| Mar | 5° | -4° | 99 mm | 83% |
| Apr | 13° | 1° | 102 mm | 79% |
| May | 19° | 8° | 98 mm | 79% |
| Jun | 24° | 13° | 115 mm | 80% |
| Jul | 27° | 17° | 97 mm | 78% |
| Aug | 27° | 16° | 95 mm | 76% |
| Sep | 23° | 12° | 90 mm | 76% |
| Oct | 16° | 6° | 123 mm | 79% |
| Nov | 9° | 0° | 94 mm | 82% |
| Dec | 2° | -5° | 111 mm | 87% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around South Nashua. Values describe typical conditions, not a forecast.
About South Nashua weather
South Nashua sits within New Hampshire's humid continental climate, from coast to White Mountains, about 26 km south of Manchester. Conditions turn hot with mild summers (June–August). By December, expect cold, snowy winters (December–February), colder in the mountains. This page shows live, auto-refreshing weather for South Nashua: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: America/New_York.
Frequently asked questions
South Nashua is about 26 km south of Manchester, in New Hampshire.
South Nashua sees cold, snowy winters (December–February), colder in the mountains.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for South Nashua's exact coordinates. No fixed schedule, the page updates whenever you load it.
July is usually the hottest month in South Nashua, with average daytime highs of about 27°C and nights around 17°C.
The coldest nights come in January, when the average low is about -10°C and daytime highs reach around -1°C. Frost is possible on clear, calm nights.
South Nashua receives about 1180 mm of rain in a typical year. October is the wettest month at roughly 123 mm, and the main rainy period is April, June, October and December.
May and July to September usually offer the most comfortable weather in South Nashua, with mild daytime temperatures and little rain.
In November South Nashua typically sees daytime highs near 9°C and lows near 0°C, with about 94 mm of rain over the month and average humidity around 82%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
Live temperature for South Nashua is shown at the top of this page and refreshes automatically — see the hourly breakdown below for how it changes through the day.
South Nashua's day-to-day weather follows the broader pattern of New Hampshire described above. See the hourly weather forecast or the air quality index for more detail.