Temperatures will drop on Sunday evening before rising again on Monday.
The heat warning is in effect for communities in the southern, central and eastern regions of the province, including:
- Acadian Peninsula
- Bathurst and Chaleur Region
- Fredericton and Southern York County
- Fundy National Park
- Grand Lake and Queens County
- Grand Manan and Coastal Charlotte County
- Kent County
- Kouchibouguac National Park
- Miramichi and region
- Moncton and Southeastern New Brunswick
- Oromocto and Sunbury County
- Saint John and County
- St. Stephen and Northern Charlotte County
- Stanley – Doaktown – région de Blackville
- Sussex – Kennebecasis Valley and Kings County
- Woodstock and Carleton County
Environment Canada recommends that people look for a cool, shaded area, an air-conditioned building or swimming pools to escape the heat.
He also advises not to leave people and pets inside parked vehicles.
Temperatures are expected to calm down by Wednesday.
Environment Canada issues heat warnings when high temperatures or humidity increase the risk of heat-related illnesses, such as heat stroke or heat exhaustion.