Less rain and snow fall on Glastonbury than on 90% of Canadian towns: 423 mm a year
On a normal July day the thermometer tops out near 23.5°C. Rain or snow is most frequent in July and least in February. In July, afternoons here are cooler than in 80% of Canadian towns. The heating season runs October to April: each of those months averages under 10°C.
1991–2020 normals from ECCC’s Edmonton (City) location, 12 km north-east.
A year in Glastonbury at a glance
Each month’s typical high and low, in °C.
What stands out about Glastonbury’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Alberta beside it.
What a year in Glastonbury feels like
Each season’s and each month’s usual high and low, 1991–2020.
About 179 frosts and 90 warm days a year
From September to May frost is routine, and in January it comes on almost every night. On about 24 nights a year the air falls below −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
Rain and melted snow: about 423 mm a year
About 72 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 124 cm of snow a year
Expect snow from October to May, with about 26 cm in January, the snowiest month.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Glastonbury
89% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
The total grows by a degree for every degree a day’s mean sits under 18°C. That means homes here need more heating than 76% of Canadian towns.
Living with Glastonbury’s climate
What the normals mean for a garden, a day outside and the depth of winter.
About 141 days a year pass without frost, from an average last frost of 7 May to a first of 25 September.
For long days outdoors, Jun, Jul and Aug bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →Winter brings about 50 days with a wind chill below −20.
Summer brings about 11 days when the humidex passes 30.
Severe weather is a separate story from the averages: see Glastonbury’s hazards page.
Flood & hazards →ECCC’s normals location: Edmonton (City)
ECCC builds the Edmonton (City) normals from 3 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 12 km north-east |
| Station altitude | 671 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −37.8°C |
| Hottest reading, 1991–2020 | 34.9°C |
| Average wind | 12.2 km/h on average, most often from the west |
| Next-nearest location | Edmonton (Airport), 22 km |
How Glastonbury compares
Against the 2,611 Canadian towns and neighbourhoods of 2,500 or more, each read from its own normals location; the dots are the other locations those towns use in Alberta.
Nearby towns’ climate
The nearest places on a normals location of their own: those that share Glastonbury’s would only repeat its figures. Glastonbury has no close neighbour with figures; the nearest is 18 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Glastonbury Edmonton (City) | 23.5°C | −14.7°C | 423 mm |
| Devon 18 km · Edmonton (Airport) | 23.0°C 0.5°C cooler | −18.1°C 3.4°C colder | 434 mm |
Glastonbury weather by month
Month by month, 1991–2020: the usual high, low and mean, the rain and snow, and the snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −5.8°C | −14.7°C | −10.3°C | 20 mm | 26 cm |
| February | −3.0°C | −12.7°C | −7.9°C | 12 mm | 13 cm |
| March | 1.7°C | −7.8°C | −3.1°C | 17 mm | 19 cm |
| April | 10.4°C | −0.7°C | 4.9°C | 29 mm | 15 cm |
| May | 17.5°C | 5.6°C | 11.6°C | 44 mm | 5 cm |
| June | 21.0°C | 10.2°C | 15.6°C | 70 mm | 0 cm |
| July | 23.5°C | 12.6°C | 18.1°C | 83 mm | 0 cm |
| August | 22.6°C | 11.3°C | 17.0°C | 61 mm | under 1 cm |
| September | 17.6°C | 6.2°C | 11.9°C | 39 mm | 1 cm |
| October | 10.0°C | −0.1°C | 5.0°C | 21 mm | 11 cm |
| November | 0.6°C | −7.5°C | −3.5°C | 18 mm | 20 cm |
| December | −4.7°C | −13.2°C | −9.0°C | 12 mm | 15 cm |
| Year | 9.3°C | −0.9°C | 4.2°C | 423 mm | 124 cm |
March: −34.0°C at its coldest, 23.9°C at its warmest
From one year to the next, February’s average typically shifts by 4.2°C around its normal of −7.9°C, the widest of any month, while June’s shifts by 1.0°C.
Where Glastonbury’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s normals for Edmonton (City), 1991–2020, chosen as the nearest location with a full temperature record.
- Comparisons: the towns and neighbourhoods of 2,500+ across Canada, each on its nearest normals location, without the city totals or the reserves.
- Not on this page: sunshine, which none of ECCC’s 450 locations publishes for 1991–2020, and the town’s own height above sea level, so no figure is adjusted for altitude.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Glastonbury’s climate
How warm does Glastonbury get in summer?
At its warmest, in July, the normal high is 23.5°C.
How cold does Glastonbury get in winter?
Midwinter means January, when a typical night reaches −14.7°C.
How much rain and snow does Glastonbury get?
Measured as water, a year brings 423 mm: 83 mm in July, the wettest month, and 12 mm in February, the driest.
Are these figures for Glastonbury itself?
Almost: ECCC’s Edmonton (City) location, which gives these figures, lies a short way outside Glastonbury.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Glastonbury →
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).