New Hampshire Heat Advisory | Effective 05/18/2026 23:34

Headline: 
Heat Advisory issued May 19 at 2:34AM EDT until May 19 at 8:00PM EDT by NWS Gray ME
Event: 
Heat Advisory
Urgency: 
Expected
Effective: 
May 18, 2026 - 11:34pm
Expires: 
May 19, 2026 - 5:00pm
Description: 
* WHAT...Heat index values up to 95 expected. * WHERE...Western and Central Hillsborough, Eastern Hillsborough, and Interior Rockingham Counties. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will remain warm tonight as overnight lows only dip into the upper 60s to lower 70s.
Instruction: 
Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Area Description: 
Eastern Hillsborough; Interior Rockingham; Western And Central Hillsborough
Forcast Office: 
NWS Gray ME