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HEAT ADVISORY - Hillsborough - Nashua - Portsmouth Seacoast - Rockingham

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 09:25 - next update at 09:30

Summary / Temperature

Wind

Rain

Outlook

Clear

80.7°F

Warm

Feels like: 83°F

24-hr difference
14.6°F

	Today	Yesterday
High:	81°F 09:17	81.5°F 16:03
Low:	52.5°F 05:10	52.9°F 04:40

	SE 2 Gust: 4 mph
1 Bft - Light air
Today: 4 mph 08:47
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:	64 %
Dew Point:	67.2°F
Barometer:	29.878 inHg
Baro Trend:	Steady

Sunrise:	05:18
Sunset:	20:08
Moonrise:	07:29
Moonset:	23:57

Waxing Crescent

11%
Illuminated

UV Index

Solar Radiation

1.4 Low

High: 3.0 @ 09:24

211 W/m² (33 %)

High: 354 @ 09:24

NWS Weather Forecast - Outlook: Today & Tonight

Today Mostly Sunny then Slight Chance Showers And T-Storms Hi 91 °F	NWS forecast: A slight chance of rain showers between 1pm and 2pm, then a slight chance of showers and thunderstorms between 2pm and 3pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 91. Southwest wind 0 to 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 Chance Showers And T-Storms then Partly Cloudy Lo 67 °F	NWS forecast: A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms between 7pm and 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.