Sullivan County, NH Weather Forecast
County weather hub
Showers And Thunderstorms Likely
Compare major city weather across Sullivan County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of rain showers between 11am and 2pm, then showers and thunderstorms likely. Partly sunny, with a high near 65. West wind 0 to 10 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
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
- May 31 to Jun 6, 2026
- Latest sync
- May 31, 2026 12:42 AM EDT
- Forecast office
- GYX
- Source
- NOAA / NWS
Daily Outlook
This Week in Sullivan County
Friday looks like the warmest upcoming period in Sullivan County at 82 degrees F.
Sunday Night is the coolest period ahead with temperatures near 42 degrees F.
The strongest winds are forecast for Sunday at about 0 to 10 mph W.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- May 31, 2026 12:42 AM EDT
- Coverage
- 7 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
Showers and thunderstorms likely before 5am. Mostly cloudy, with a low around 42. West wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Rain showers likely after 7am. Partly sunny, with a high near 63. Northeast wind 0 to 5 mph. Chance of precipitation is 60%.
A slight chance of rain showers before 8pm. Mostly clear, with a low around 42. Southwest wind around 0 mph.
A slight chance of rain showers after 2pm. Mostly sunny, with a high near 68.
A slight chance of rain showers before 10pm. Partly cloudy, with a low around 45.
Mostly sunny, with a high near 71.
Mostly clear, with a low around 48.
Sunny, with a high near 79.
Mostly clear, with a low around 54.
Mostly sunny, with a high near 82.
Partly cloudy, with a low around 57.
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
May 31
|
Showers And Thunderstorms Likely
|
65°F |
0 to 10 mph
W
|
|
Sunday Night
May 31
|
Showers And Thunderstorms Likely
|
42°F |
0 to 5 mph
W
|
|
Monday
Jun 1
|
Rain Showers Likely
|
63°F |
0 to 5 mph
NE
|
|
Monday Night
Jun 1
|
Slight Chance Rain Showers then Mostly Clear
|
42°F |
0 mph
|
|
Tuesday
Jun 2
|
Mostly Sunny then Slight Chance Rain Showers
|
68°F |
0 to 5 mph
NW
|
|
Tuesday Night
Jun 2
|
Slight Chance Rain Showers then Partly Cloudy
|
45°F |
0 to 5 mph
N
|
|
Wednesday
Jun 3
|
Mostly Sunny
|
71°F |
0 to 5 mph
N
|
|
Wednesday Night
Jun 3
|
Mostly Clear
|
48°F |
0 to 5 mph
W
|
|
Thursday
Jun 4
|
Sunny
|
79°F |
0 to 5 mph
NW
|
|
Thursday Night
Jun 4
|
Mostly Clear
|
54°F |
0 to 5 mph
W
|
|
Friday
Jun 5
|
Mostly Sunny
|
82°F |
0 to 5 mph
W
|
|
Friday Night
Jun 5
|
Partly Cloudy
|
57°F |
5 mph
W
|
|
Saturday
Jun 6
|
Chance Rain Showers
|
81°F |
5 to 10 mph
W
|
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.
