Photo: Earth Science and Remote Sensing Unit , Lyndon B. Johnson Space Center · Public domainFew Canadian towns have warmer summer afternoons than Electoral Area C, Okanagan-Similkameen
Deep winter brings January lows near −3.8°C. Temperatures cover 35°C across the year, low to high. Its yearly rain and snow fall short of almost every Canadian town. Plan for rain or snow on about 75 days a year, the days with 1 mm or more.
These are not Electoral Area C, Okanagan-Similkameen’s own readings: ECCC keeps no normals there, so the page uses Osoyoos, 22 km south.
A year in Electoral Area C, Okanagan-Similkameen at a glance
Each month’s typical high and low, in °C.
What stands out about Electoral Area C, Okanagan-Similkameen’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in British Columbia beside it.
What a year in Electoral Area C, Okanagan-Similkameen feels like
Each season’s and each month’s usual high and low, 1991–2020.
111 frost days and 152 days above 20°C a year
Frosts fall from October to April; December has the most, about 24. Heat of 30°C or more comes on about 53 days a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
344 mm of precipitation in a typical year
The most falls in June, the least in February.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Precipitation and snowfall: Penticton, 27 km away (Osoyoos records no complete year of either).
About 62 cm of snow a year
From November to March snow is likely; December is the peak, at about 20 cm.
Snowfall by month
Centimetres
Heating a home in Electoral Area C, Okanagan-Similkameen
94% of a year’s heating need falls between October and April. Months averaging under 10°C: November to March.
Degree days add up how far each day’s mean temperature falls below 18°C over a year. A house here needs less heating than 94% of Canadian towns.
Living with Electoral Area C, Okanagan-Similkameen’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
The comfortable months for a day outside, highs of 17–27°C and nights of 8°C or more: May, Jun and Sep.
Parks & trails →Bitter wind chill, under −20, comes on about 2 days a year.
About 56 days a year turn sultry, with the humidex past 30.
Severe weather is a separate story from the averages: see Electoral Area C, Okanagan-Similkameen’s hazards page.
Flood & hazards →ECCC’s normals location: Osoyoos
Osoyoos is one of the 450 places where ECCC publishes 1991–2020 normals.
| Distance from the town | 22 km south |
| Station altitude | 283 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Precipitation from | Penticton, 27 km |
| Coldest reading, 1991–2020 | −21.7°C |
| Hottest reading, 1991–2020 | 42.8°C |
| Average wind | 6.7 km/h on average, most often from the south-east |
| Next-nearest location | Penticton, 27 km |
How Electoral Area C, Okanagan-Similkameen 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 British Columbia.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on Electoral Area C, Okanagan-Similkameen’s own would show the same figures).
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Electoral Area C, Okanagan-Similkameen Osoyoos | 31.6°C | −3.8°C | 344 mm |
| Oliver 3.6 km · Osoyoos | 31.6°C about the same | −3.8°C about the same | 344 mm |
| Okanagan Falls 16 km · Penticton | 29.2°C 2.4°C cooler | −3.2°C 0.6°C milder | 344 mm |
Electoral Area C, Okanagan-Similkameen 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 | 1.8°C | −3.8°C | −1.0°C | 28 mm | 19 cm |
| February | 5.8°C | −3.1°C | 1.4°C | 19 mm | 9 cm |
| March | 12.2°C | 0.0°C | 6.1°C | 23 mm | 5 cm |
| April | 17.7°C | 3.6°C | 10.7°C | 26 mm | 1 cm |
| May | 23.2°C | 8.4°C | 15.8°C | 38 mm | 0 cm |
| June | 26.5°C | 11.9°C | 19.2°C | 44 mm | 0 cm |
| July | 31.6°C | 14.8°C | 23.2°C | 28 mm | 0 cm |
| August | 31.0°C | 14.0°C | 22.5°C | 27 mm | 0 cm |
| September | 25.1°C | 9.3°C | 17.2°C | 25 mm | 0 cm |
| October | 16.2°C | 4.1°C | 10.2°C | 29 mm | under 1 cm |
| November | 7.3°C | −0.3°C | 3.6°C | 28 mm | 8 cm |
| December | 2.0°C | −3.4°C | −0.7°C | 30 mm | 20 cm |
| Year | 16.7°C | 4.6°C | 10.7°C | 344 mm | 62 cm |
March has run from −13.4°C to 25.4°C in thirty years
The month to count on least is February: one year in three its average strays more than 2.4°C from 1.4°C. August moves least, typically by 1.0°C.
Where Electoral Area C, Okanagan-Similkameen’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at Osoyoos (the closest location with all twelve months of temperatures).
- Other locations: ECCC blanks a month that fails its completeness rule, so the precipitation or snowfall here comes from the next location with all twelve months.
- Comparisons: a pool of Canadian towns and neighbourhoods of 2,500 or more, read alike; whole cities and reserves stay out of it.
- 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 Electoral Area C, Okanagan-Similkameen’s climate
How warm does Electoral Area C, Okanagan-Similkameen get in summer?
Peak warmth comes in July, at about 31.6°C by mid-afternoon.
How cold does Electoral Area C, Okanagan-Similkameen get in winter?
Lows sink to −3.8°C on an average January night.
How much rain and snow does Electoral Area C, Okanagan-Similkameen get?
The year adds up to 344 mm. June is the peak month (44 mm) and February the low one (19 mm).
Are these figures for Electoral Area C, Okanagan-Similkameen itself?
They come from Osoyoos, which ECCC uses as the nearest normals location for Electoral Area C, Okanagan-Similkameen.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Electoral Area C, Okanagan-Similkameen →
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).