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: @ 07/01/2026 03:10 - next update at 03:15  
Summary / Temperature Wind Rain Outlook
Mostly cloudy Mostly cloudy
Currently: 69.1, Max: 71.1, Min: 69.1 69.1°F
Colder 0.7°F than last hour.

Comfortable

Feels like: 69°F

24-hr difference
11.2°FWarmer 11.2°F than yesterday at this time.
  Today Yesterday
High: 71.1°F
00:00
88.2°F
13:15
Low: 69.1°F
03:06
55.9°F
05:26
 Calm
0
Gust:
0 mph
0 Bft - Calm
Today: 1 mph 02:58
Gust Month: 1 mph July 01
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0.09 in
Storm Rain: 0.06 in
This Month: 0 in
Season Total: 15.78 in
1 day since last rain.
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
Humidity & Barometer Almanac Moon
Humidity: 99 %  
Dew Point: 68.8°F Decreased 0.7°F since last hour.
Barometer: 29.811 inHg Falling 0.01  inHg/hr
Baro Trend: Steady
Sunrise: 05:10
Sunset: 20:30
Moonset: 06:21
Moonrise: 22:00
Waning Gibbous
Waning Gibbous, Moon at 15 days in cycle
98%
Illuminated
UV Index Solar Radiation
   0.0    None
High: 0.0 @ 00:00
0 W/m2 (0 %)
High: 0 @  00:00
 NWS Weather Forecast  - Outlook: Overnight & Wednesday
Overnight

Overnight: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms

Lo 65 °F
NWS forecast: A slight chance of showers and thunderstorms before 4am. Partly cloudy, with a low around 65. South wind around 0 mph. Chance of precipitation is 20%.
 
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny

Hi 97 °F
NWS forecast: Mostly sunny, with a high near 97. Heat index values as high as 109. Southwest wind 0 to 5 mph.