Extreme Heat Warning EXTREME HEAT WARNING - Belknap  - Caroll N  - Caroll S  - Cheshire/Keene  - Concord/Merrimack  - Grafton N  - Grafton S  - Hillsborough  - Nashua  - Portsmouth Seacoast  - Rockingham  - Strafford  - Sullivan
Heat Advisory HEAT ADVISORY - Coos North  - Coos South  - Grafton N  - Grafton S
Air Quality Alert AIR QUALITY ALERT - Portsmouth Seacoast  - Rockingham

The hot and humid conditions begin on Wednesday, and continue through at least Friday across northern New England. The heat peaks on Thursday, with only a gradual cool down expected into the weekend. Nighttime lows in the 70s offer little relief, and result in accumulated heat stress. Starting late today through the end of the week the ingredients will be there for thunderstorms, some of which could be strong to severe. SPC has a Marginal Risk for severe storms for at least a portion of our area late today through Thursday.
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Updated: @ 06/30/2026 23:40 - next update at 23:45  
Summary / Temperature Wind Rain Outlook
Mostly cloudy Mostly cloudy
Currently: 71.2, Max: 88.2, Min: 55.9 71.2°F
 

Comfortable

Feels like: 71°F

24-hr difference
8.9°FWarmer 8.9°F than yesterday at this time.
  Today Yesterday
High: 88.2°F
13:15
85.1°F
13:46
Low: 55.9°F
05:26
55°F
05:13
 Calm
0
Gust:
0 mph
0 Bft - Calm
Today: 7 mph 17:34
Gust Month: 19 mph June 26
Rain Today: 0.09 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
Storm Rain: 0.06 in
This Month: 4.06 in
Season Total: 15.77 in
10 rain days in June.
Wednesday

Wednesday: Chance Showers And Thunderstorms then Mostly Sunny
Chance Showers And T-Storms then Mostly Sunny
Humidity & Barometer Almanac Moon
Humidity: 99 %  
Dew Point: 70.9°F  
Barometer: 29.865 inHg Falling 0.01  inHg/hr
Baro Trend: Steady
Sunrise: 05:10
Sunset: 20:30
Moonset: 05:18
Moonrise: 21:29
Full Moon
Full Moon, Moon at 15 days in cycle
99%
Illuminated
UV Index Solar Radiation
   0.0    None
High: 8.0 @ 13:19
0 W/m2 (0 %)
High: 847 @  13:24
 NWS Weather Forecast  - Outlook: Tonight & Wednesday
Tonight

Tonight: Chance Showers And Thunderstorms
Chance Showers And T-Storms

Lo 65 °F
NWS forecast: A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind around 0 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
 
Wednesday

Wednesday: Chance Showers And Thunderstorms then Mostly Sunny
Chance Showers And T-Storms then Mostly Sunny

Hi 97 °F
NWS forecast: A chance of showers and thunderstorms before 10am. Mostly sunny, with a high near 97. Heat index values as high as 109. West wind 0 to 5 mph. Chance of precipitation is 40%.