Sullivan County, NH Weather Forecast
County weather hub
Rain Showers
Compare major city weather across Sullivan County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Rain showers and patchy fog before 5am, then patchy fog and a slight chance of rain showers. Cloudy, with a low around 56. Southeast wind around 0 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter 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
- Apr 16 to Apr 22, 2026
- Latest sync
- Apr 16, 2026 4:37 AM EDT
- Forecast office
- GYX
- Source
- NOAA / NWS
Daily Outlook
This Week in Sullivan County
Thursday looks like the warmest upcoming period in Sullivan County at 76 degrees F.
Monday Night is the coolest period ahead with temperatures near 24 degrees F.
The strongest winds are forecast for Sunday at about 5 to 10 mph SW.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 16, 2026 4:37 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
Patchy fog before 10am, then a slight chance of rain showers between 1pm and 5pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 76. South wind 0 to 5 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms likely before 4am. Some of the storms could be severe. Mostly cloudy, with a low around 57. Southwest wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
A chance of rain showers between 8am and 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 70. Northwest wind around 5 mph. Chance of precipitation is 40%.
A chance of rain showers before 10pm. Mostly cloudy, with a low around 51. Northeast wind 0 to 5 mph. Chance of precipitation is 30%.
Mostly cloudy, with a high near 62.
A chance of rain showers after 10pm. Cloudy, with a low around 45. Chance of precipitation is 40%.
Rain showers likely. Cloudy, with a high near 54. Chance of precipitation is 70%.
Rain showers likely before 11pm, then a slight chance of snow showers between 11pm and 5am. Mostly cloudy, with a low around 29. Chance of precipitation is 60%.
A slight chance of snow showers between 7am and 2pm. Partly sunny, with a high near 40.
Partly cloudy, with a low around 24.
Mostly sunny, with a high near 49.
A slight chance of rain showers between 10pm and 11pm, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 36.
A slight chance of rain showers. Partly sunny, with a high near 56.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Apr 16
|
Rain Showers
|
56°F |
0 mph
|
|
Thursday
Apr 16
|
Patchy Fog then Chance Showers And Thunderstorms
|
76°F |
0 to 5 mph
S
|
|
Thursday Night
Apr 16
|
Showers And Thunderstorms Likely
|
57°F |
5 mph
SW
|
|
Friday
Apr 17
|
Chance Rain Showers
|
70°F |
5 mph
NW
|
|
Friday Night
Apr 17
|
Chance Rain Showers then Mostly Cloudy
|
51°F |
0 to 5 mph
NE
|
|
Saturday
Apr 18
|
Mostly Cloudy
|
62°F |
0 to 5 mph
SE
|
|
Saturday Night
Apr 18
|
Chance Rain Showers
|
45°F |
5 mph
SE
|
|
Sunday
Apr 19
|
Rain Showers Likely
|
54°F |
5 to 10 mph
SW
|
|
Sunday Night
Apr 19
|
Slight Chance Snow Showers
|
29°F |
5 to 10 mph
W
|
|
Monday
Apr 20
|
Slight Chance Snow Showers
|
40°F |
10 mph
NW
|
|
Monday Night
Apr 20
|
Partly Cloudy
|
24°F |
5 to 10 mph
NW
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
49°F |
5 to 10 mph
W
|
|
Tuesday Night
Apr 21
|
Slight Chance Rain And Snow Showers
|
36°F |
5 mph
SW
|
|
Wednesday
Apr 22
|
Slight Chance Rain Showers
|
56°F |
5 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.
