Sullivan County, NH Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across Sullivan County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 64. West wind 0 to 5 mph.
County Weather Overview
This county weather page brings together forecast coverage for Sullivan County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 1 of 1 mapped cities in Sullivan County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 26 to Oct 30, 2026
- Latest sync
- Oct 24, 2026 6:55 PM EDT
- Forecast office
- GYX
- Source
- NOAA / NWS
Daily Outlook
This Week in Sullivan County
Monday looks like the warmest upcoming period in Sullivan County at 64 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 24 degrees F.
The strongest winds are forecast for Friday at about 5 to 10 mph W.
The forecast from Oct 26 through Oct 30 stays mostly dry.
Forecast Details
- Last updated
- Oct 24, 2026 6:55 PM EDT
- Coverage
- 5 days
- Time zone
- America/New_York
- Forecast office
- GYX
- Radar station
- KCXX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 30.
Sunny, with a high near 51.
Clear, with a low around 24.
Sunny, with a high near 54.
Mostly clear, with a low around 33.
Sunny, with a high near 63.
Mostly clear, with a low around 43.
Mostly sunny, with a high near 64.
Partly cloudy, with a low around 39.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Oct 26
|
Mostly Sunny
|
64°F |
0 to 5 mph
W
|
|
Monday Night
Oct 26
|
Partly Cloudy
|
30°F |
5 mph
NW
|
|
Tuesday
Oct 27
|
Sunny
|
51°F |
5 mph
NW
|
|
Tuesday Night
Oct 27
|
Clear
|
24°F |
0 to 5 mph
N
|
|
Wednesday
Oct 28
|
Sunny
|
54°F |
0 to 5 mph
SW
|
|
Wednesday Night
Oct 28
|
Mostly Clear
|
33°F |
0 mph
|
|
Thursday
Oct 29
|
Sunny
|
63°F |
0 to 5 mph
SW
|
|
Thursday Night
Oct 29
|
Mostly Clear
|
43°F |
5 mph
SW
|
|
Friday
Oct 30
|
Mostly Sunny
|
64°F |
5 to 10 mph
W
|
|
Friday Night
Oct 30
|
Partly Cloudy
|
39°F |
0 to 5 mph
NW
|
Major City Forecasts
Live forecast snapshots for major cities across Sullivan County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Sullivan County.
Largest mapped city population in this region: 12,944.
