Sullivan County, NH Weather Forecast
County weather hub
Sunny
Compare major city weather across Sullivan County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 80.
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
- Jul 17 to Jul 21, 2026
- Latest sync
- Jul 15, 2026 2:34 AM 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 84 degrees F.
Friday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Friday at about 5 to 10 mph NW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 15, 2026 2:34 AM 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
Mostly clear, with a low around 56.
A chance of rain showers between 7am and 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 50%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Rain showers likely before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms between 7pm and 9pm. Partly cloudy, with a low around 60. Chance of precipitation is 30%.
Mostly sunny, with a high near 84.
A slight chance of showers and thunderstorms between 8pm and 2am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Partly sunny, with a high near 82.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 17
|
Sunny
|
80°F |
5 to 10 mph
NW
|
|
Friday Night
Jul 17
|
Mostly Clear
|
56°F |
0 to 5 mph
NW
|
|
Saturday
Jul 18
|
Chance Rain Showers
|
78°F |
0 to 5 mph
SW
|
|
Saturday Night
Jul 18
|
Showers And Thunderstorms Likely
|
59°F |
0 to 5 mph
S
|
|
Sunday
Jul 19
|
Rain Showers Likely
|
81°F |
0 to 5 mph
W
|
|
Sunday Night
Jul 19
|
Chance Showers And Thunderstorms then Partly Cloudy
|
60°F |
0 to 5 mph
W
|
|
Monday
Jul 20
|
Mostly Sunny
|
84°F |
0 to 5 mph
SW
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms
|
62°F |
0 to 5 mph
S
|
|
Tuesday
Jul 21
|
Chance Showers And Thunderstorms
|
82°F |
5 to 10 mph
SW
|
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.
