Photo: Quintin Soloviev · CC BY 4.0Precipitation in Summerside tops that of 92% of Canadian towns: 1,252 mm a year
In January the night’s low is typically −11.3°C. Winter and summer sit 35°C apart. Summers stay cool: July afternoons here are cooler than in 70% of Canadian towns. Comfortable outdoor weather lasts from June to September, with highs of 19–24°C.
Environment and Climate Change Canada’s 1991–2020 normals at its Summerside station, 5.5 km north-west.
A year in Summerside at a glance
Each month’s typical high and low, in °C.
What stands out about Summerside’s climate
Compared with Canadian towns, with its place among towns of 2,500+ on Prince Edward Island beside it.
What a year in Summerside feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
153 frost days and 87 days above 20°C a year
The frost season runs October to May, and January freezes nearly every night. Deep cold, under −20°C, comes on about 6 nights a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
About 1,252 mm of rain and snow a year
The most falls in December, the least in July. 3rd wettest of 12 towns of 2,500+ on Prince Edward Island. About 156 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Precipitation and snowfall: New Glasgow, 34 km away (Summerside records no complete year of either).
292 cm of snow in a typical year
Snow falls from November to May, most of all in January (about 67 cm). 2nd snowiest of 12 towns of 2,500+ on Prince Edward Island.
Snowfall by month
Centimetres
Heating a home in Summerside
89% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
ECCC sums, over the year, how many degrees each day’s average falls short of 18°C.
Living with Summerside’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Mild days and mild nights together (17–27°C by day, 8°C or more at night) belong to Jun, Jul, Aug and Sep.
Parks & trails →A wind chill below −20 is part of about 29 days a year here.
Plan shade and water for about 28 days a year above 30 on the humidex.
A normal year has no blizzard, flood or heat wave in it; Summerside’s hazards page looks at those.
Flood & hazards →ECCC’s normals location: Summerside
Behind the 1991–2020 normals for Summerside are 2 stations, which ECCC combines into one record.
| Distance from the town | 5.5 km north-west |
| Station altitude | 12 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Precipitation from | New Glasgow, 34 km |
| Coldest reading, 1991–2020 | −28.0°C |
| Hottest reading, 1991–2020 | 33.7°C |
| Average wind | 18.8 km/h on average, most often from the south |
| Next-nearest location | New Glasgow, 34 km |
How Summerside compares
Compared with 2,611 towns and neighbourhoods of 2,500 or more across Canada; the dots mark the other normals locations on Prince Edward Island.
Nearby towns’ climate
Places around Summerside whose figures come from another normals location. No closer places have figures: these lie 20–43 km from Summerside.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Summerside | 24.1°C | −11.3°C | 1,252 mm |
| New London 20 km · New Glasgow | 23.9°C about the same | −11.1°C about the same | 1,252 mm |
| Crapaud, Part 1 30 km · Elmwood | 23.7°C about the same | −11.0°C about the same | 1,290 mm |
| Cap-Pelé 43 km · Moncton | 25.1°C 1.0°C warmer | −13.3°C 2.0°C colder | 1,203 mm |
Summerside weather by month
Average daily high and low, mean temperature, rain and snow (as water) and snowfall by month, 1991–2020.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −2.9°C | −11.3°C | −7.1°C | 111 mm | 67 cm |
| February | −2.6°C | −11.3°C | −7.0°C | 91 mm | 65 cm |
| March | 1.2°C | −6.6°C | −2.7°C | 94 mm | 50 cm |
| April | 7.3°C | −0.8°C | 3.3°C | 86 mm | 24 cm |
| May | 14.3°C | 4.9°C | 9.6°C | 90 mm | 2 cm |
| June | 19.7°C | 10.4°C | 15.1°C | 98 mm | 0 cm |
| July | 24.1°C | 15.0°C | 19.6°C | 75 mm | 0 cm |
| August | 23.8°C | 14.5°C | 19.2°C | 88 mm | 0 cm |
| September | 19.4°C | 10.4°C | 14.9°C | 117 mm | 0 cm |
| October | 13.0°C | 5.2°C | 9.1°C | 135 mm | 1 cm |
| November | 6.7°C | −0.1°C | 3.3°C | 130 mm | 19 cm |
| December | 0.9°C | −6.0°C | −2.5°C | 138 mm | 66 cm |
| Year | 10.4°C | 2.0°C | 6.2°C | 1,252 mm | 292 cm |
From −23.0°C to 25.2°C: March’s coldest and warmest days since 1991
The month to count on least is February: one year in three its average strays more than 2.1°C from −7.0°C. July moves least, typically by 0.8°C.
Where Summerside’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Summerside, the nearest location with a full year of temperatures.
- Other locations: a location missing months of precipitation or snow is filled from the nearest that has them all, never mixed month by month.
- Comparisons: every place of 2,500+ in Canada but the city hubs and the reserves, each on its nearest ECCC location.
- Not on this page: a sunshine figure (ECCC published none for 1991–2020) and any lapse-rate correction for height, as the town has no elevation here.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Summerside’s climate
How warm does Summerside get in summer?
Summer peaks in July: a typical afternoon reaches 24.1°C.
How cold does Summerside get in winter?
The year’s coldest nights belong to January, at about −11.3°C.
How much rain and snow does Summerside get?
Some 1,252 mm falls in a year. Most of it comes in December (138 mm), the least in July (75 mm).
Are these figures for Summerside itself?
Close to it: they are ECCC’s 1991–2020 normals for Summerside, just outside Summerside’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Summerside →
Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).