Caernarvon is drier than 90% of Canadian towns: 423 mm of rain and snow a year
In January the night’s low is typically −14.7°C. Precipitation peaks in July and eases off in February. By July afternoons alone, it runs cooler than 80% of Canadian towns. Plan time outside from June to August, when highs sit at 21–24°C.
1991–2020 normals from ECCC’s Edmonton (City) location, 4.6 km south.
A year in Caernarvon at a glance
Each month’s typical high and low, in °C.
What stands out about Caernarvon’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Alberta beside it.
What a year in Caernarvon feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
Frost on 179 days, 20°C on 90
Frost comes from September to May; in January almost every night freezes. Deep cold, under −20°C, comes on about 24 nights a year.
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
On about 72 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 124 cm of snow a year
Snow falls from October to May, most of all in January (about 26 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Caernarvon
89% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Think of it as a year’s worth of daily shortfalls below 18°C, added up. In heating terms, homes need more heating than 76% of Canadian towns.
Living with Caernarvon’s climate
What the normals mean for a garden, a day outside and the depth of winter.
The frost-free stretch runs from about 7 May to about 25 September, some 141 days in a normal year.
Afternoons of 17–27°C and nights of at least 8°C arrive in Jun, Jul and Aug.
Parks & trails →Count on some 50 days a year when the wind makes it feel below −20.
Roughly 11 days a year feel hotter than 30 once humidity is counted.
A typical year is calm by definition; Caernarvon’s hazards page covers the exceptions.
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 | 4.6 km south |
| 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 | Fort Saskatchewan, 26 km |
How Caernarvon compares
Placed among 2,611 Canadian towns and neighbourhoods of 2,500+, each on its nearest normals location; each dot is another location used in Alberta.
Nearby towns’ climate
Places around Caernarvon whose figures come from another normals location. Caernarvon has few close neighbours with figures, so the list reaches 21–30 km out.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Caernarvon Edmonton (City) | 23.5°C | −14.7°C | 423 mm |
| Fort Saskatchewan 21 km · Fort Saskatchewan | 23.6°C about the same | −17.8°C 3.1°C colder | 473 mm |
| Beaumont 30 km · Edmonton (Airport) | 23.0°C 0.5°C cooler | −18.1°C 3.4°C colder | 434 mm |
Caernarvon 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 | −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 |
The month with the widest range: March, −34.0°C to 23.9°C
Bars run from each month’s record low to its record high over 1991–2020; February is the month whose average wanders most from year to year (±4.2°C around −7.9°C), June the one that wanders least (±1.0°C).
Where Caernarvon’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at Edmonton (City), the closest ECCC location with twelve months of temperature normals.
- Comparisons: every Canadian town and neighbourhood of 2,500 or more, each read from its own nearest location; city totals and reserves are left out.
- Not on this page: sunshine, absent from every 1991–2020 location, and an altitude correction, for want of the town’s own elevation.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Caernarvon’s climate
How warm does Caernarvon get in summer?
The warmest month is July, when afternoons average 23.5°C.
How cold does Caernarvon get in winter?
At its coldest, in January, the normal low is −14.7°C.
How much rain and snow does Caernarvon get?
Rain and snow, with snow counted as water, total 423 mm a year; July leads with 83 mm and February trails with 12 mm.
Are these figures for Caernarvon itself?
Nearly: Edmonton (City), the location behind them, sits just beyond Caernarvon’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Caernarvon →
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).