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Climate in Geraldton · ECCC 1991–2020 normals

Geraldton sits near the bottom of Canadian towns for winter warmth

The warmest part of a July day comes in at 23.6°C on average. Rain or snow is most frequent in July and least in February. By July afternoons alone, it runs cooler than 72% of Canadian towns. Comfortable outdoor weather lasts from June to August, with highs of 21–24°C.

July afternoons: cooler than 72% of Canadian towns
January nights: colder than almost every Canadian town
Rain and snow a year: drier than 66% of Canadian towns

Figures: ECCC’s 1991–2020 normals at Geraldton (6.3 km north).

A year in Geraldton at a glance

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

Jan−12°C−25°CColdest nights
Feb−9°C−23°C
Mar−1°C−16°C
Apr7°C−7°C
May15°C2°CLast frost ~31 May
Jun21°C8°C
Jul24°C11°CWarmestWettest
Aug22°C10°C
Sep17°C5°CFirst frost ~16 Sep
Oct8°C−1°C
Nov now−1°C−9°C
Dec−8°C−18°CSnowiest

What stands out about Geraldton’s climate

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

A normal year

What a year in Geraldton feels like

Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.

Winter
−10°C / −22°C
98 mm, with 118 cm of snow
Spring
7°C / −7°C
160 mm, with 62 cm of snow
Summer
22°C / 10°C
266 mm of rain and snow, the wettest season
Autumn
8°C / −2°C
239 mm, with 69 cm of snow
Best months to be outsideJunJulAugHighs of 17–27°C and nights of 8°C or more
Frost & warm days

Frost on 214 days, 20°C on 83

The frost season runs September to May, and January freezes nearly every night. Deep cold, under −20°C, comes on about 71 nights a year.

214
Frost days a year (0°C or below)
More frosts than 98% of Canadian towns
122
Days that stay below 0°C
71
Nights a year below −20°C
83
Days a year above 20°C
4
Days a year above 30°C

Frost days by month

Average days at 0°C or below

31
JFMAMJJASOND

Days above 20°C by month

Average days

25
JFMAMJJASOND
Rain & snow

Rain and melted snow: about 762 mm a year

865th wettest of 871 towns of 2,500+ in Ontario. About 114 days a year bring 1 mm or more.

762 mm
Rain and snow a year
Drier than 66% of Canadian towns
547 mm
Of it as rain alone (72%)
108 mm
July, the wettest month
26 mm
February, the driest month

Rain and snow by month

Millimetres

108 mm
JFMAMJJASOND

Rain alone by month

Millimetres

108 mm
JFMAMJJASOND
Snow

249 cm of snow in a typical year

From September to May snow is likely; December is the peak, at about 44 cm.

249 cm
Snowfall a year
Snowier than 87% of Canadian towns
85
Days a year with 0.2 cm of snow or more
169
Days a year with 1 cm or more on the ground
51 cm
Snow on the ground at the end of February, the deepest month

Snowfall by month

Centimetres

44 cm
JFMAMJJASOND

Snow on the ground by month

Centimetres at month’s end

51 cm
JFMAMJJASOND
Heating

Heating a home in Geraldton

88% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.

6,353 heating degree days (below 18°C)a year, 1991–2020
1,392 growing degree days (above 5°C)a year, 1991–2020

Warm days count for nothing; each colder day adds how far its mean sits below 18°C. In heating terms, homes need more heating than almost every Canadian town.

Living here

Living with Geraldton’s climate

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

The garden window

The growing season between frosts lasts about 106 days, roughly 31 May to 16 September.

Get outside

For long days outdoors, Jun, Jul and Aug bring highs of 17–27°C and lows of 8°C or more.

Parks & trails →
Wind chill

Plan for about 90 days a year with a wind chill below −20.

Humidex

Muggy heat with a humidex over 30 arrives on about 17 days a year.

Storms and extremes

Storms, floods and heat waves sit outside these normals; Geraldton’s hazards page covers them.

Flood & hazards →
Weather station

ECCC’s normals location: Geraldton

Geraldton is a composite: ECCC joins 2 stations’ readings to make its 1991–2020 normals.

Distance from the town6.3 km north
Station altitude348 m
Completenessmeets the WMO “3 and 5” rule
WMO standard normalsNo
Coldest reading, 1991–2020−50.2°C
Hottest reading, 1991–202037.0°C
Average wind11.4 km/h on average, most often from the west
Next-nearest locationArmstrong, 154 km
Compared with other towns

How Geraldton compares

Compared with 2,611 towns and neighbourhoods of 2,500 or more across Canada; the dots mark the other normals locations in Ontario.

July afternoons23.6°C
GeraldtonMedian Canadian town
20°C22°C24°C26°C28°C30°C
Cooler than 72% of Canadian towns
January nights−24.7°C
GeraldtonMedian Canadian town
−25°C−20°C−15°C−10°C−5°C
Colder than almost every Canadian town870th mildest of 871 towns of 2,500+ in Ontario
Rain and snow a year762 mm
GeraldtonMedian Canadian town
05001,0001,5002,000
Drier than 66% of Canadian towns865th wettest of 871 towns of 2,500+ in Ontario
Snowfall a year249 cm
GeraldtonMedian Canadian town
0100200300400
Snowier than 87% of Canadian towns
Next door

Nearby towns’ climate

The nearest places on a normals location of their own: those that share Geraldton’s would only repeat its figures. No closer place has figures: this one lies 125 km from Geraldton.

TownJuly highJanuary lowRain & snow
Geraldton23.6°C−24.7°C762 mm
Nipigon 125 km · Thunder Bay24.9°C 1.3°C warmer−19.2°C 5.5°C milder762 mm
Month by month

Geraldton weather by month

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

MonthHighLowMeanRain & snowSnow
January−12.2°C−24.7°C−18.5°C36 mm43 cm
February−8.8°C−23.4°C−16.1°C26 mm31 cm
March−1.3°C−16.1°C−8.7°C33 mm29 cm
April6.6°C−6.7°C0.0°C49 mm28 cm
May15.2°C1.6°C8.4°C78 mm5 cm
June21.4°C8.0°C14.7°C82 mmunder 1 cm
July23.6°C11.1°C17.4°C108 mm0 cm
August22.3°C9.9°C16.1°C76 mm0 cm
September16.5°C5.2°C10.9°C102 mm2 cm
October7.6°C−0.8°C3.4°C84 mm24 cm
November−1.0°C−9.3°C−5.1°C53 mm44 cm
December−8.3°C−18.3°C−13.3°C37 mm44 cm
Year6.8°C−5.3°C0.8°C762 mm249 cm
Year to year

February varies most from one year to the next (3.7°C), August least

Each bar spans a month’s coldest and warmest readings over thirty years; March’s run from −40.0°C in 1996 to 20.7°C in 2012.

Record low to record high, 1991–2020Normal
Sources

Where Geraldton’s numbers come from

Averages over 30 years, not a forecast.

  • Normals: 1991–2020 normals for Geraldton from ECCC’s climate data site, the nearest location with every month of temperature.
  • 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, 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 Geraldton’s climate

How warm does Geraldton get in summer?

The year’s warmest days come in July, with highs averaging 23.6°C.

How cold does Geraldton get in winter?

Expect nights around −24.7°C in January; no month is colder.

How much rain and snow does Geraldton get?

About 762 mm a year, rain and melted snow together. July is the wettest month (108 mm) and February the driest (26 mm).

How long does snow stay on the ground?

On about 169 days a year the ground keeps at least 1 cm of snow.

Are these figures for Geraldton itself?

Yes, from ECCC’s station within Geraldton’s boundary.

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

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).