Photo: Earth Science and Remote Sensing Unit , Lyndon B. Johnson Space Center · Public domainFew Canadian towns get less rain and snow than Lethbridge County: 373 mm a year
Expect July afternoons of about 26.3°C. Rain or snow is most frequent in June and least in February. By July afternoons alone, it runs hotter than 63% of Canadian towns. Ice scrapers and block heaters earn their keep on roughly 175 days a year at 0°C or below.
Figures: ECCC’s 1991–2020 normals at Lethbridge (24 km south).
A year in Lethbridge County at a glance
Each month’s typical high and low, in °C.
What stands out about Lethbridge County’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Alberta beside it.
What a year in Lethbridge County feels like
Each season’s and each month’s usual high and low, 1991–2020.
175 frost days and 112 days above 20°C a year
The frost season runs September to May, and December freezes nearly every night. On about 22 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
373 mm of precipitation in a typical year
On about 69 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 108 cm in a normal year
From August to May snow is likely; March is the peak, at about 18 cm.
Snowfall by month
Centimetres
Heating a home in Lethbridge County
88% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Behind the figure: the degrees each day’s mean falls under 18°C, summed for the year.
Living with Lethbridge County’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
The frost-free stretch runs from about 21 May to about 17 September, some 118 days in a normal year.
Highs of 17–27°C with nights of 8°C or more come in Jun, Jul and Aug.
Parks & trails →Expect around 41 days a year when the wind chill sinks below −20.
A humidex above 30 marks about 24 days in a normal year.
A typical year is calm by definition; Lethbridge County’s hazards page covers the exceptions.
Flood & hazards →ECCC’s normals location: Lethbridge
Behind the 1991–2020 normals for Lethbridge are 4 stations, which ECCC combines into one record.
| Distance from the town | 24 km south |
| Station altitude | 929 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −41.9°C |
| Hottest reading, 1991–2020 | 40.1°C |
| Average wind | 17.1 km/h on average, most often from the west |
| Next-nearest location | Vauxhall, 53 km |
How Lethbridge County compares
Compared with 2,611 towns and neighbourhoods of 2,500 or more across Canada; the dots mark the other normals locations in Alberta.
Nearby towns’ climate
Places around Lethbridge County whose figures come from another normals location. No closer places have figures: these lie 39–48 km from Lethbridge County.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Lethbridge County Lethbridge | 26.3°C | −12.1°C | 373 mm |
| Barnwell 39 km · Vauxhall | 26.8°C 0.5°C warmer | −14.1°C 2.0°C colder | 373 mm |
| Fort Macleod 46 km · Claresholm | 25.2°C 1.1°C cooler | −13.2°C 1.1°C colder | 428 mm |
Lethbridge County weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | 0.1°C | −12.1°C | −6.0°C | 11 mm | 13 cm |
| February | 1.7°C | −11.0°C | −4.6°C | 10 mm | 15 cm |
| March | 6.4°C | −6.8°C | −0.2°C | 17 mm | 18 cm |
| April | 12.6°C | −1.3°C | 5.7°C | 28 mm | 13 cm |
| May | 18.2°C | 3.9°C | 11.1°C | 57 mm | 5 cm |
| June | 21.8°C | 8.3°C | 15.1°C | 93 mm | 0 cm |
| July | 26.3°C | 10.5°C | 18.4°C | 40 mm | 0 cm |
| August | 26.3°C | 9.4°C | 17.9°C | 33 mm | 1 cm |
| September | 21.0°C | 5.3°C | 13.2°C | 32 mm | 1 cm |
| October | 13.3°C | −0.6°C | 6.4°C | 24 mm | 10 cm |
| November | 5.5°C | −6.6°C | −0.5°C | 16 mm | 16 cm |
| December | 0.7°C | −11.2°C | −5.3°C | 12 mm | 15 cm |
| Year | 12.8°C | −1.0°C | 5.9°C | 373 mm | 108 cm |
From −38.0°C to 26.8°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 4.8°C from −4.6°C. June moves least, typically by 1.2°C.
Where Lethbridge County’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s normals for Lethbridge, 1991–2020, chosen as the nearest location with a full temperature record.
- Comparisons: the 2,500-plus towns and neighbourhoods of Canada, each read from its closest normals location; whole cities and reserves aren’t counted.
- 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 Lethbridge County’s climate
How warm does Lethbridge County get in summer?
The warmest month is July, when afternoons average 26.3°C.
How cold does Lethbridge County get in winter?
In January, the coldest month, the typical low is −12.1°C.
How much rain and snow does Lethbridge County get?
June is the wettest month at 93 mm and February the driest at 10 mm, for 373 mm over the year.
Are these figures for Lethbridge County itself?
Yes: they are ECCC’s 1991–2020 normals for Lethbridge, a location inside Lethbridge County.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Lethbridge County →
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).