Alton, NH Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms then Partly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Alton, NH in one place.
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 51. West wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Alton, NH is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 14, 2026 11:59 PM EDT.
The active forecast window currently covers Apr 14 to Apr 21, 2026 for Alton, NH.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 14 to Apr 21, 2026
- Latest sync
- Apr 14, 2026 11:59 PM EDT
- Forecast office
- GYX
- Source
- NOAA / NWS
Daily Outlook
This Week in Alton
Thursday looks like the warmest upcoming period in Alton at 67 degrees F.
Monday Night is the coolest period ahead with temperatures near 25 degrees F.
The strongest winds are forecast for Monday at about 10 to 15 mph W.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 14, 2026 11:59 PM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- GYX
- Radar station
- KGYX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of rain showers between 1pm and 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 64. Southeast wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms before 8pm, then showers and thunderstorms likely. Cloudy, with a low around 48. Southeast wind 0 to 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Rain showers likely before 5pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 67. South wind 0 to 10 mph. Chance of precipitation is 60%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 49. Southwest wind around 5 mph. Chance of precipitation is 50%.
A chance of rain showers before 11am, then showers and thunderstorms likely. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
A slight chance of rain showers before 7am. Mostly cloudy, with a high near 55.
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 42.
Rain showers likely. Mostly cloudy, with a high near 58. Chance of precipitation is 60%.
Rain showers likely. Mostly cloudy, with a low around 34. Chance of precipitation is 60%.
A chance of rain showers before 8am, then a slight chance of rain and snow showers between 8am and 3pm. Partly sunny, with a high near 44. Chance of precipitation is 30%.
Partly cloudy, with a low around 25.
Sunny, with a high near 45.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tonight
Apr 14
|
Chance Showers And Thunderstorms then Partly Cloudy
|
51°F |
5 mph
W
|
|
Wednesday
Apr 15
|
Mostly Cloudy then Showers And Thunderstorms Likely
|
64°F |
5 mph
SE
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
48°F |
0 to 5 mph
SE
|
|
Thursday
Apr 16
|
Rain Showers Likely
|
67°F |
0 to 10 mph
S
|
|
Thursday Night
Apr 16
|
Chance Showers And Thunderstorms
|
49°F |
5 mph
SW
|
|
Friday
Apr 17
|
Showers And Thunderstorms Likely
|
64°F |
5 mph
N
|
|
Friday Night
Apr 17
|
Showers And Thunderstorms Likely
|
45°F |
5 mph
NE
|
|
Saturday
Apr 18
|
Slight Chance Rain Showers then Mostly Cloudy
|
55°F |
5 mph
E
|
|
Saturday Night
Apr 18
|
Mostly Cloudy then Slight Chance Rain Showers
|
42°F |
0 to 5 mph
SE
|
|
Sunday
Apr 19
|
Rain Showers Likely
|
58°F |
5 to 10 mph
S
|
|
Sunday Night
Apr 19
|
Rain Showers Likely
|
34°F |
10 mph
W
|
|
Monday
Apr 20
|
Slight Chance Rain And Snow Showers
|
44°F |
10 to 15 mph
W
|
|
Monday Night
Apr 20
|
Partly Cloudy
|
25°F |
5 to 15 mph
NW
|
|
Tuesday
Apr 21
|
Sunny
|
45°F |
10 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Alton.
