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Sullivan, NH Weather Forecast
Sullivan, NH Weather Forecast Dated: 506 AM Wed Sep 09 2026
Expect a cool pattern with more clouds than sun and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate.
Wednesday, September 9, 2026
Mid-Morning
65°F 19°C
Scattered Showers
Mid-Afternoon
68°F 20°C
Overcast
Early-Evening
65°F 19°C
Scattered Showers
Pleasant near 68°F 20°C, periods of heavy rain and gusty conditions, with increasing humidity and barometric pressure falling.
Thursday, September 10, 2026
Mid-Morning
66°F 19°C
Scattered Showers
Mid-Afternoon
77°F 25°C
Cloudy
Early-Evening
69°F 20°C
Partly Cloudy
Comfortable with temperatures reaching 77°F 25°C, scattered downpours possible, with lower humidity and steady pressure. Winds turning from the WSW to the WNW at 12 mph 20 km/h. Gusts up to 28 mph 45 km/h.
Friday, September 11, 2026
Mid-Morning
53°F 12°C
Partly Cloudy
Mid-Afternoon
67°F 19°C
Sunny
Early-Evening
59°F 15°C
Sunny
Comfortable at 67°F 19°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds switching from the NNW to the NNE at 5 mph 8 km/h.
Saturday, September 12, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
72°F 22°C
Sunny
Early-Evening
64°F 18°C
Sunny
Mild temperatures up to 72°F 22°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure.
Sunday, September 13, 2026
Mid-Morning
61°F 16°C
Overcast
Mid-Afternoon
63°F 17°C
Cloudy
Early-Evening
61°F 16°C
Fog
Refreshing around 63°F 17°C, overcast throughout the day, with increasing humidity and steady pressure. Winds SSW at 9 mph 14 km/h.
Monday, September 14, 2026
Mid-Morning
65°F 18°C
Overcast
Mid-Afternoon
78°F 26°C
Scattered Showers
Early-Evening
71°F 22°C
Overcast
Pleasant near 78°F 26°C, locally heavy downpours at times, with steady humidity and steady pressure.
Tuesday, September 15, 2026
Mid-Morning
55°F 13°C
Rain
Mid-Afternoon
51°F 11°C
Light Showers
Early-Evening
52°F 11°C
Light Showers
Chilly near 51°F 11°C, rounds of showers expected off and on all day, with steady humidity and steady pressure.
Wednesday, September 16, 2026
Mid-Morning
57°F 14°C
Fog
Mid-Afternoon
65°F 18°C
Overcast
Early-Evening
56°F 14°C
Scattered Showers
Cool with a high near 65°F 18°C, scattered downpours possible, with lower humidity and steady pressure. Winds picking up from SSE at 2 mph 4 km/h to NW at 14 mph 22 km/h. Gusts up to 26 mph 42 km/h.
Thursday, September 17, 2026
Mid-Morning
53°F 12°C
Sunny
Mid-Afternoon
65°F 18°C
Overcast
Early-Evening
56°F 14°C
Sunny
Refreshing around 65°F 18°C, cloudy in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds tapering down from NNW 15 mph 23 km/h to ESE 5 mph 9 km/h.
Friday, September 18, 2026
Mid-Morning
51°F 11°C
Scattered Showers
Mid-Afternoon
62°F 17°C
Overcast
Early-Evening
64°F 18°C
Partly Cloudy
Mildly cool near 62°F 17°C, periods of heavy rain and gusty conditions, with steady humidity and barometric pressure falling. Winds turning from the SSW to the WNW at 6 mph 9 km/h. Gusts up to 23 mph 36 km/h.
Saturday, September 19, 2026
Mid-Morning
43°F 6°C
Overcast
Mid-Afternoon
54°F 12°C
Sunny
Early-Evening
47°F 8°C
Sunny
Chilly near 54°F 12°C, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds switching from the N to the SE at 7 mph 10 km/h.
Sunday, September 20, 2026
Mid-Morning
43°F 6°C
Sunny
Mid-Afternoon
57°F 14°C
Sunny
Early-Evening
51°F 10°C
Overcast
Crisp with a high near 57°F 14°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure.
Monday, September 21, 2026
Mid-Morning
47°F 8°C
Overcast
Mid-Afternoon
55°F 13°C
Overcast
Early-Evening
60°F 16°C
Overcast
Brisk around 55°F 13°C, overcast throughout the day, with increasing humidity and barometric pressure falling. Winds building from S at 5 mph 9 km/h to SSW at 13 mph 20 km/h. Gusts up to 33 mph 53 km/h.
Tuesday, September 22, 2026
Mid-Morning
60°F 16°C
Overcast
Mid-Afternoon
63°F 17°C
Overcast
Early-Evening
53°F 11°C
Overcast
Mildly cool near 63°F 17°C, overcast throughout the day, with steady humidity and barometric pressure rising. Winds swinging from the WNW to the NNW at 10 mph 16 km/h. Gusts up to 23 mph 37 km/h.
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