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Climate in Deep River · ECCC 1991–2020 normals

Winter nights in Deep River are colder than in 83% of Canadian towns

High summer brings afternoon highs near 26.3°C. Summer afternoons here are warmer than in 63% of Canadian towns. June is the wettest month, February the driest. Garden chairs stay out from June to August, the months with highs of 24–26°C.

July afternoons: warmer than 63% of Canadian towns

January nights: colder than 83% of Canadian towns

Rain and snow a year: wetter than 58% of Canadian towns

The nearest ECCC normals location to Deep River is Petawawa, 21 km south-east, and every figure on this page is its.

July high

26.3°C

Typical Canadian town 25.5°C

January low

−17.9°C

Typical Canadian town −13.5°C

Rain & snow a year

932 mm

Typical Canadian town 883 mm

Snowfall a year

199 cm

Typical Canadian town 141 cm

A year in Deep River at a glance

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

Jan−6°C−18°CColdest nightsSnowiest

Feb−4°C−17°C

Mar3°C−10°C

Apr11°C−2°C

May19°C5°C

Jun24°C10°CWettest

Jul26°C12°CWarmest

Aug25°C12°C

Sep21°C7°C

Oct13°C2°C

Nov now5°C−4°C

Dec−2°C−12°C

What stands out about Deep River’s climate

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

A wider year than 87% of Canadian townsFrom January nights to July afternoons, the year spans 44.2°C.Colder than 83% of Canadian townsJanuary nights average −17.9°C, the coldest of the year.Snowier than 71% of Canadian townsAbout 199 cm of snow falls in a year, most of it in January.

A normal year

What a year in Deep River feels like

Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.

Winter

−4°C / −15°C

191 mm, with 133 cm of snow

Spring

11°C / −3°C

222 mm, with 38 cm of snow

Summer

25°C / 11°C

276 mm of rain and snow, the wettest season

Autumn

13°C / 2°C

244 mm, with 28 cm of snow

−30°

−20°

−10°

0°

10°

20°

30°

40°

−6°C−18°C

−4°C−17°C

3°C−10°C

11°C−2°C

19°C5°C

24°C10°C

26°C12°C

25°C12°C

21°C7°C

13°C2°C

5°C−4°C

−2°C−12°C

JanFebMarAprMayJunJulAugSepOctNovDec

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

Rain & snow

932 mm of precipitation in a typical year

About 132 days a year bring 1 mm or more.

932 mm

Rain and snow a year

Wetter than 58% of Canadian towns

721 mm

Of it as rain alone (77%)

96 mm

June, the wettest month

51 mm

February, the driest month

Rain and snow by month

Millimetres

96 mm

JFMAMJJASOND

Rain alone by month

Millimetres

96 mm

JFMAMJJASOND

Snow

199 cm of snow in a typical year

Snow falls from October to April, most of all in January (about 49 cm).

199 cm

Snowfall a year

Snowier than 71% of Canadian towns

Days a year with 0.2 cm of snow or more

140

Days a year with 1 cm or more on the ground

52 cm

Snow on the ground at the end of February, the deepest month

Snowfall by month

Centimetres

49 cm

JFMAMJJASOND

Snow on the ground by month

Centimetres at month’s end

52 cm

JFMAMJJASOND

Living here

Living with Deep River’s climate

Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.

Get outside

Mild days and mild nights together (17–27°C by day, 8°C or more at night) belong to Jun, Jul and Aug.

Parks & trails →

Wind chill

A wind chill below −20 is part of about 52 days a year here.

Humidex

Expect around 46 sticky days a year with the humidex above 30.

Storms and extremes

Thirty years of averages say little about one bad storm; Deep River’s hazards page does.

Flood & hazards →

Weather station

ECCC’s normals location: Petawawa

ECCC builds the Petawawa normals from 3 stations’ records over 1991–2020, joined where one replaced another.

Distance from the town	21 km south-east
Station altitude	130 m
Completeness	at least 20 years
WMO standard normals	No
Coldest reading, 1991–2020	−39.8°C
Hottest reading, 1991–2020	36.9°C
Average wind	9.6 km/h on average, most often from the south-east
Next-nearest location	Charteris, 94 km

Compared with other towns

How Deep River 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 Ontario.

July afternoons26.3°C

Deep RiverMedian Canadian town

20°C22°C24°C26°C28°C30°C

Warmer than 63% of Canadian towns

January nights−17.9°C

Deep RiverMedian Canadian town

−25°C−20°C−15°C−10°C−5°C

Colder than 83% of Canadian towns

Rain and snow a year932 mm

Deep RiverMedian Canadian town

05001,0001,5002,000

Wetter than 58% of Canadian towns

Snowfall a year199 cm

Deep RiverMedian Canadian town

0100200300400

Snowier than 71% of Canadian towns

Next door

Nearby towns’ climate

The nearest places on a normals location of their own: those that share Deep River’s would only repeat its figures. The nearest places to Deep River with figures are 64–71 km away.

Town	July high	January low	Rain & snow
Deep River Petawawa	26.3°C	−17.9°C	932 mm
Whitewater Region 64 km · Charteris	26.4°C about the same	−16.9°C 1.0°C milder	932 mm
Barry's Bay 71 km · Bancroft	25.7°C 0.6°C cooler	−17.1°C 0.8°C milder	932 mm

Month by month

Deep River 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	−6.1°C	−17.9°C	−11.9°C	68 mm	49 cm
February	−3.6°C	−16.6°C	−10.2°C	51 mm	38 cm
March	2.7°C	−10.0°C	−3.7°C	58 mm	27 cm
April	10.8°C	−2.0°C	4.5°C	79 mm	11 cm
May	19.2°C	4.5°C	12.0°C	85 mm	1 cm
June	24.0°C	10.0°C	17.0°C	96 mm	0 cm
July	26.3°C	12.3°C	19.3°C	89 mm	0 cm
August	25.2°C	11.6°C	18.4°C	90 mm	0 cm
September	20.6°C	7.3°C	14.0°C	83 mm	0 cm
October	12.8°C	2.1°C	7.5°C	83 mm	3 cm
November	4.8°C	−4.1°C	0.3°C	77 mm	25 cm
December	−2.4°C	−11.9°C	−7.3°C	72 mm	45 cm
Year	11.2°C	−1.2°C	5.0°C	932 mm	199 cm

Year to year

December strays furthest from its normal year to year, by 3.1°C; June the least

Each bar spans a month’s coldest and warmest readings over thirty years; March’s run from −33.4°C in 2007 to 28.8°C in 2012.

−50°

−40°

−30°

−20°

−10°

0°

10°

20°

30°

40°

JanFebMarAprMayJunJulAugSepOctNovDec

Record low to record high, 1991–2020Normal

Sources

Where Deep River’s numbers come from

Averages over 30 years, not a forecast.

Normals: the closest ECCC location with twelve months of temperature normals, Petawawa, 1991–2020.
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, 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 Deep River’s climate

How warm does Deep River get in summer?

July is the warmest month, with average highs of 26.3°C.

How cold does Deep River get in winter?

Overnight lows average −17.9°C in January, the coldest month.

How much rain and snow does Deep River get?

The yearly total is about 932 mm. June gets 96 mm, the most of any month; February gets 51 mm, the least.

How long does snow stay on the ground?

In a normal winter there are about 140 days with at least 1 cm of snow lying.

Are these figures for Deep River itself?

The figures are ECCC’s for Petawawa; Deep River has no normals station.

Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Deep River →

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).