The Frontier Gazette & Almanack
“Fair Warning for Every Town Under the Sky” · Est. 1881
Measure in

Alliston Weather in August

Alliston in August

The short of it: Alliston in August averages a high of 26 °C (78 °F) and a low of 14 °C (57 °F), with 72 mm (2.8 in) of rain and about 14 h 0 min of daylight. Rated 3 of 5 for a visit; the best months are June and September. Source: TerraClimate climate normals, 1991–2020.

Average high 26° · low 14° · rain 72 mm · daylight 14 h 0 min

✦✦✦ Fair for a visit · best months: June & September

Thirty years of records give Alliston an average August high of 26°, a low of 14° and some 72 mm of rain. Much like July: highs about 26°, nights near 14°. Easy travelling weather. Wet spells are common — about 72 mm, the 7th wettest month.

The sun is up for about 14 h 0 min in mid-August, 71 minutes less than a month before.

For the traveller: pack light clothes and a jacket for the evening, and an oilskin besides. The Almanac rates August 3 of 5 for a visit; the finest months here are June and September.

Against its neighbours, Alliston runs warmer than most and drier than most in August. Innisfil, 24 km to the NE, is 1° cooler by day.

August in Alliston, by the numbers

Warmth rank
2nd warmest of 12
Rain rank
7th wettest of 12
Versus July
about the same, 5.0 mm less rain
Versus September
4° warmer
Day–night spread
12°
Snow season
Nov–Apr
Daylight, mid-month
14 h 0 min
Average wind
12 km/h

Neighbouring Towns

August averages · distance by the crow’s flight
TownDistanceHighLowRain
InnisfilOntario24 km NE25°14°76 mm
BoltonOntario32 km SSE25°14°73 mm
OrangevilleOntario32 km SW24°13°82 mm
BarrieOntario32 km NNE25°15°78 mm
CaledonOntario33 km SSW25°13°78 mm
NewmarketOntario34 km ESE25°15°80 mm
AuroraOntario36 km ESE25°15°80 mm
VaughanOntario46 km SE26°15°79 mm

The Almanac · Alliston Month by Month

Climate normals 1991–2020 · pick a month
PrecipitationAverage highAverage low
Fair
The Almanac Speaks
August
✦✦✦✦✦

Much like July: highs about 26°, nights near 14°. Easy travelling weather. Wet spells are common — about 72 mm, the 7th wettest month.

Climate of Alliston by month
MonthHighLowRainWindDaylightVisit
January-3°-11°60 mm17 km/h9 h 13 min✦
February-2°-12°55 mm16 km/h10 h 24 min✦
March3°-6°48 mm15 km/h11 h 47 min✦
April10°0°72 mm16 km/h13 h 24 min✦
May18°6°85 mm14 km/h14 h 45 min✦✦✦
June23°11°88 mm12 km/h15 h 29 min✦✦✦
July26°14°77 mm12 km/h15 h 11 min✦✦✦
August26°14°72 mm12 km/h14 h 0 min✦✦✦
September22°10°74 mm12 km/h12 h 27 min✦✦✦
October14°5°77 mm15 km/h10 h 54 min✦✦
November7°-1°74 mm16 km/h9 h 33 min✦
December1°-6°58 mm17 km/h8 h 53 min✦

Questions Readers Ask about Alliston in August

Answered from the wire & the Almanac

What is the weather like in Alliston in August?

Days average 26 °C (78 °F) and nights 14 °C (57 °F), with about 72 mm (2.8 in) of rain over the month. Much like July: highs about 26°, nights near 14°. Easy travelling weather. Wet spells are common — about 72 mm, the 7th wettest month.

Is August a good time to visit Alliston?

The Almanac gives August 3 of 5 (fair). The best months are June and September.

How long are the days in Alliston in August?

In mid-August the sun is up for about 14 h 0 min. The days are shortening — from 8 h 53 min in December to 15 h 29 min in June.

Does it snow in Alliston in August?

Hardly — August nights average 14 °C (57 °F), above freezing.

What should I pack for Alliston in August?

Light clothes and a jacket for the evening, plus a good raincoat — it is a wet month.

More Towns in Canada

All towns in Canada →

Toronto · Montréal · Calgary · Ottawa · Edmonton · Winnipeg · Mississauga · Vancouver · Brampton · Hamilton · Surrey · Québec

The Editor’s Remark

“Weather is the only news that never grows stale. Each morning the sky writes its own front page, and we at Wanted Weather are but its telegraph operators.”— J. Whitmore, Editor