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Heat Advisory HEAT ADVISORY - Hillsborough  - Nashua  - Portsmouth Seacoast  - Rockingham
Air Quality Alert AIR QUALITY ALERT - Portsmouth Seacoast  - Rockingham

A period of hot a breezy weather is expected today and Wednesday as temperatures climb into the upper 80s and low 90s ahead of a cold front. Strong to severe thunderstorms will be possible this afternoon into early evening ahead of the front with another round of showers and storms possible Wednesday as the front crosses. It will also be breezy today and Wednesday with gusts of 25 to 30 mph. Cooler and drier weather follows the front for Thursday and Friday.
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Updated: @ 05/19/2026 11:55 - next update at 12:00  
Summary / Temperature Wind Rain Outlook
Clear Clear
Currently: 89.1, Max: 90.7, Min: 52.5 89.1°F
Warmer 0.7°F than last hour.

Warm

Feels like: 91°F

24-hr difference
14°FWarmer 14.0°F than yesterday at this time.
  Today Yesterday
High: 90.7°F
11:30 		81.5°F
16:03
Low: 52.5°F
05:10 		52.9°F
04:40
Wind from SSE SSE
3
Gust:
 9 mph
1 Bft - Light air
Today: 11 mph 11:43
Gust Month: 23 mph May 07
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
Storm Rain: 0 in
This Month: 3.62 in
Season Total: 9.1 in
8 rain days in May.
Tonight

Tonight: Chance Showers And Thunderstorms then Partly Cloudy
Chance Showers And T-Storms then Partly Cloudy
Humidity & Barometer Almanac Moon
Humidity: 45 % Decreased 5.0% since last hour.
Dew Point: 65.2°F Decreased 2.2°F since last hour.
Barometer: 29.826 inHg Falling 0.01 inHg/hr
Baro Trend: Steady
Sunrise: 05:18
Sunset: 20:08
Moonrise: 07:29
Moonset: 23:57
Waxing Crescent
Waxing Crescent, Moon at 3 days in cycle
12%
Illuminated
UV Index Solar Radiation
   4.5     Medium 
High: 8.0 @ 11:35
496 W/m2 (53 %)
High: 847 @  11:35
 NWS Weather Forecast  - Outlook: Today & Tonight
Today

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

Hi 91 °F		 NWS forecast: A slight chance of rain showers between 1pm and 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 91. West wind around 10 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
 
Tonight

Tonight: Chance Showers And Thunderstorms then Partly Cloudy
Chance Showers And T-Storms then Partly Cloudy

Lo 67 °F		 NWS forecast: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 67. Southwest wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.