Photo: Earth Science and Remote Sensing Unit , Lyndon B. Johnson Space Center · Public domain

Climate in Electoral Area B, Okanagan-Similkameen · ECCC 1991–2020 normals

Electoral Area B, Okanagan-Similkameen has some of the warmest summer afternoons among Canadian towns

Midwinter brings lows of about −3.8°C. Seasons differ by 35°C, from the coldest nights to the warmest afternoons. Counting rain and snow together, it is drier than almost every Canadian town. Warm coats and heating bills mark the months from November to March, when means dip under 10°C.

July afternoons: warmer than almost every Canadian town

January nights: milder than 93% of Canadian towns

Rain and snow a year: drier than almost every Canadian town

Electoral Area B, Okanagan-Similkameen has no ECCC normals station of its own: every figure here comes from Osoyoos, 26 km south-east.

July high

31.6°C

Typical Canadian town 25.5°C

January low

−3.8°C

Typical Canadian town −13.5°C

Rain & snow a year

344 mm

Typical Canadian town 883 mm

Snowfall a year

62 cm

Typical Canadian town 141 cm

Frost days

111

a year at 0°C or below

A year in Electoral Area B, Okanagan-Similkameen at a glance

Each month’s typical high and low, in °C.

Jan2°C−4°CColdest nights

Feb6°C−3°C

Mar12°C0°C

Apr18°C4°C

May23°C8°C

Jun27°C12°CWettest

Jul32°C15°CWarmest

Aug31°C14°C

Sep25°C9°C

Oct16°C4°C

Nov now7°C0°C

Dec2°C−3°CSnowiest

What stands out about Electoral Area B, Okanagan-Similkameen’s climate

Compared with Canadian towns, with its place among towns of 2,500+ in British Columbia beside it.

Warmer than almost every Canadian townJuly afternoons average 31.6°C, the warmest of the year. The warmest of 256 towns of 2,500+ in British Columbia.Drier than almost every Canadian townAbout 344 mm of rain and melted snow a year; June is the wettest month and February the driest.Less snowy than 94% of Canadian townsAbout 62 cm of snow falls in a year, most of it in December.

A normal year

What a year in Electoral Area B, Okanagan-Similkameen feels like

Each season’s and each month’s usual high and low, 1991–2020.

Winter

3°C / −3°C

77 mm, with 48 cm of snow

Spring

18°C / 4°C

87 mm of rain and snow

Summer

30°C / 14°C

99 mm of rain and snow, the wettest season

Autumn

16°C / 4°C

82 mm of rain and snow

−10°

−5°

0°

5°

10°

15°

20°

25°

30°

35°

40°

2°C−4°C

6°C−3°C

12°C0°C

18°C4°C

23°C8°C

27°C12°C

32°C15°C

31°C14°C

25°C9°C

16°C4°C

7°C0°C

2°C−3°C

JanFebMarAprMayJunJulAugSepOctNovDec

Best months to be outsideMayJunSepHighs of 17–27°C and nights of 8°C or more

Frost & warm days

Frost on 111 days, 20°C on 152

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.

111

Frost days a year (0°C or below)

Fewer frosts than 87% of Canadian towns

Days that stay below 0°C

152

Days a year above 20°C

Days a year above 30°C

Frost days by month

Average days at 0°C or below

JFMAMJJASOND

Days above 20°C by month

Average days

JFMAMJJASOND

Rain & snow

Rain and melted snow: about 344 mm a year

June brings the most rain and snow; February, the least. About 75 days a year bring 1 mm or more.

344 mm

Rain and snow a year

Drier than almost every Canadian town

293 mm

Of it as rain alone (85%)

44 mm

June, the wettest month

19 mm

February, the driest month

Rain and snow by month

Millimetres

44 mm

JFMAMJJASOND

Rain alone by month

Millimetres

44 mm

JFMAMJJASOND

Osoyoos publishes no full year of precipitation or snowfall, so these figures, and the snow below, come from Penticton, 35 km away.

Snow

62 cm of snow in a typical year

Snow falls from November to March, most of all in December (about 20 cm).

62 cm

Snowfall a year

Less snowy than 94% of Canadian towns

Days a year with 0.2 cm of snow or more

Snowfall by month

Centimetres

20 cm

JFMAMJJASOND

Heating

Heating a home in Electoral Area B, Okanagan-Similkameen

94% of a year’s heating need falls between October and April. Months averaging under 10°C: November to March.

3,069 heating degree days (below 18°C)a year, 1991–2020

2,671 growing degree days (above 5°C)a year, 1991–2020

One degree below 18°C for one day makes one heating degree day; the year’s days are added together. In heating terms, homes need less heating than 94% of Canadian towns.

Living here

Living with Electoral Area B, Okanagan-Similkameen’s climate

What the normals mean for a garden, a day outside and the depth of winter.

Get outside

Highs of 17–27°C with nights of 8°C or more come in May, Jun and Sep.

Parks & trails →

Wind chill

Expect around 2 days a year when the wind chill sinks below −20.

Humidex

The air feels heavier than 30 on the humidex for about 56 days a year.

Storms and extremes

A typical year is calm by definition; Electoral Area B, Okanagan-Similkameen’s hazards page covers the exceptions.

Flood & hazards →

Weather station

ECCC’s normals location: Osoyoos

Every temperature, frost, snow and degree-day figure on this page is the 1991–2020 normal ECCC publishes for Osoyoos.

Distance from the town	26 km south-east
Station altitude	283 m
Completeness	meets the WMO “3 and 5” rule
WMO standard normals	No
Precipitation from	Penticton, 35 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, 35 km

Compared with other towns

How Electoral Area B, 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.

July afternoons31.6°C

Electoral Area B, Okanagan-SimilkameenMedian Canadian town

14°C18°C22°C26°C30°C

Warmer than almost every Canadian townThe warmest of 256 towns of 2,500+ in British Columbia

January nights−3.8°C

Electoral Area B, Okanagan-SimilkameenMedian Canadian town

−25°C−20°C−15°C−10°C−5°C0°C5°C

Milder than 93% of Canadian towns

Rain and snow a year344 mm

Electoral Area B, Okanagan-SimilkameenMedian Canadian town

01,0002,0003,000

Drier than almost every Canadian town

Snowfall a year62 cm

Electoral Area B, Okanagan-SimilkameenMedian Canadian town

0100200300400500

Less snowy than 94% of Canadian towns

Next door

Nearby towns’ climate

The nearest places on a normals location of their own: those that share Electoral Area B, Okanagan-Similkameen’s would only repeat its figures.

Town	July high	January low	Rain & snow
Electoral Area B, Okanagan-Similkameen Osoyoos	31.6°C	−3.8°C	344 mm
Keremeos 8.3 km · Penticton	29.2°C 2.4°C cooler	−3.2°C 0.6°C milder	344 mm
Oliver 13 km · Osoyoos	31.6°C about the same	−3.8°C about the same	344 mm

Month by month

Electoral Area B, Okanagan-Similkameen weather by month

Each month’s normals, 1991–2020: high, low, mean, precipitation and 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

Year to year

February varies most from one year to the next (2.4°C), August least

March has the widest record range, −13.4°C in 2019 to 25.4°C in 1994; the tick on each bar is the month’s normal.

−30°

−20°

−10°

0°

10°

20°

30°

40°

50°

JanFebMarAprMayJunJulAugSepOctNovDec

Record low to record high, 1991–2020Normal

Sources

Where Electoral Area B, Okanagan-Similkameen’s numbers come from

Averages over 30 years, not a forecast.

Normals: the 1991–2020 normals from ECCC for Osoyoos, its nearest location with complete temperatures.
Other locations: where a location publishes no full year of precipitation or snowfall, the nearest one that does supplies it, named beside those figures.
Comparisons: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
Not on this page: sunshine, not in ECCC’s 1991–2020 normals, and the effect of the town’s height, for which there is no figure.

Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada

Questions about Electoral Area B, Okanagan-Similkameen’s climate

How warm does Electoral Area B, Okanagan-Similkameen get in summer?

A normal July afternoon tops out at about 31.6°C, the year’s high point.

How cold does Electoral Area B, Okanagan-Similkameen get in winter?

January nights average −3.8°C, the coldest of the year.

How much rain and snow does Electoral Area B, Okanagan-Similkameen get?

Count on roughly 344 mm a year, heaviest in June (44 mm) and lightest in February (19 mm).

Are these figures for Electoral Area B, Okanagan-Similkameen itself?

They come from Osoyoos, which ECCC uses as the nearest normals location for Electoral Area B, Okanagan-Similkameen.

Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Electoral Area B, 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).