Weather Tomorrow for ZIP 03801
Portsmouth, NH · View full Portsmouth forecast
Monday, September 21, 2026
Cloudy
Precip chance
51%
Wind
0-10 mph
Humidity
81%
Feels like
65–54°F
Rain forecast
Rain likely starts around 4 AM and may continue until 4 AM. Peak chance: 51% around 4 AM.
Data source: National Weather Service (NOAA) · Updated just now
Tomorrow by Hour
52°Temperature trend67°
| Time | Temp | Condition | Rain % | Wind | ||
|---|---|---|---|---|---|---|
| 4 AM☽ | 56°F | Areas Of Fog | 51% | 5 mph N | ||
| 5 AM☽ | 56°F | Areas Of Fog | 36% | 5 mph N | ||
| 6 AM☽ | 55°F | Chance Rain Showers | 29% | 5 mph N | ||
| 7 AM☽ | 56°F | Slight Chance Rain Showers | 16% | 5 mph N | ||
| 8 AM☽ | 54°F | Cloudy | 4% | 5 mph N | ||
| 9 AM☽ | 54°F | Cloudy | 0% | 10 mph N | ||
| 10 AM | 52°F | Cloudy | 0% | 5 mph N | ||
| 11 AM | 53°F | Mostly Cloudy | 0% | 5 mph N | ||
| 12 PM | 54°F | Partly Sunny | 0% | 10 mph N | ||
| 1 PM | 58°F | Mostly Sunny | 0% | 10 mph N | ||
| 2 PM | 60°F | Mostly Sunny | 0% | 10 mph N | ||
| 3 PM | 63°F | Sunny | 0% | 10 mph N | ||
| 4 PM | 65°F | Mostly Sunny | 0% | 10 mph N | ||
| 5 PM | 66°F | Mostly Sunny | 0% | 10 mph N | ||
| 6 PM | 67°F | Mostly Sunny | 0% | 5 mph N | ||
| 7 PM | 67°F | Partly Sunny | 0% | 10 mph NE | ||
| 8 PM | 66°F | Mostly Sunny | 0% | 10 mph N | ||
| 9 PM | 65°F | Mostly Sunny | 0% | 10 mph NE | ||
| 10 PM☽ | 64°F | Partly Cloudy | 0% | 10 mph N | ||
| 11 PM☽ | 60°F | Partly Cloudy | 0% | 0 mph | ||
| 12 AM☽ | 58°F | Partly Cloudy | 0% | 0 mph | ||
| 1 AM☽ | 57°F | Mostly Cloudy | 0% | 0 mph | ||
| 2 AM☽ | 55°F | Mostly Cloudy | 0% | 0 mph | ||
| 3 AM☽ | 54°F | Mostly Cloudy | 0% | 5 mph N | ||
Precipitation Timeline
100%
50%
51%
4a10a4p10p
<20%20-50%50-70%>70%
What to Wear Tomorrow
Warm and comfortable — dress light
Clothing
- • T-shirt or light blouse
- • Shorts or light pants
Footwear
Comfortable shoes or sandals
Accessories
- • Umbrella
Conditions
High: 67°F
Low: 52°F
Wind: 0-10 mph
Rain: 51%
Rain expected around 4 AM — carry an umbrella.
Best Time to Be Outside Tomorrow
6 PM – 7 PM
Excellent conditions for outdoor activities (dry, comfortable temp, light wind, daylight)
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