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

Sumner in August

The short of it: Sumner in August averages a high of 30 °C (86 °F) and a low of 18 °C (65 °F), with 82 mm (3.2 in) of rain and about 13 h 40 min of daylight. Rated 2 of 5 for a visit; the best months are May and October. Source: TerraClimate climate normals, 1991–2020.

Average high 86° · low 65° · rain 3.2 in. · daylight 13 h 40 min

✦✦ Travel with care for a visit · best months: May & October

August in Sumner brings afternoons near 86° and nights around 65°, with about 3.2 in. of rain over the month. Days run hot, near 86° in the afternoon; ride early and rest at noon. Wet spells are common — about 3.2 in., the 8th wettest month.

The sun is up for about 13 h 40 min in mid-August, 57 minutes less than a month before.

For the traveller: pack linen, a wide hat and water, and an oilskin besides. The Almanac rates August 2 of 5 for a visit; the finest months here are May and October.

Against its neighbours, Sumner runs cooler than most and about as wet in August. Bridgeport, 6 mi to the E, sees much the same highs.

August in Sumner, by the numbers

Warmth rank
2nd warmest of 12
Rain rank
8th wettest of 12
Versus July
1° colder, 1.0 in. less rain
Versus September
5° warmer
Day–night spread
22°
Snow season
Dec–Feb
Daylight, mid-month
13 h 40 min
Average wind
5 mph

Neighbouring Towns

August averages · distance by the crow’s flight
TownDistanceHighLowRain
BridgeportIllinois6 mi E86°65°3.2 in.
LawrencevilleIllinois10 mi E87°65°3.3 in.
OlneyIllinois12 mi W87°65°3.1 in.
West SalemIllinois16 mi SSW87°65°3.1 in.
VincennesIndiana18 mi E87°65°3.3 in.
OblongIllinois20 mi N86°64°3.3 in.
RobinsonIllinois21 mi NNE86°64°3.3 in.
Mount CarmelIllinois22 mi SSE87°66°3.1 in.

The Almanac · Sumner Month by Month

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

Days run hot, near 86° in the afternoon; ride early and rest at noon. Wet spells are common — about 3.2 in., the 8th wettest month.

Climate of Sumner by month
MonthHighLowRainWindDaylightVisit
January39°23°3.0 in.9 mph9 h 44 min✦
February44°26°2.7 in.9 mph10 h 42 min✦✦
March55°35°4.0 in.9 mph11 h 50 min✦✦
April66°45°4.8 in.9 mph13 h 10 min✦✦✦
May76°55°5.0 in.7 mph14 h 16 min✦✦✦
June85°64°4.3 in.6 mph14 h 52 min✦✦
July87°67°4.2 in.5 mph14 h 37 min✦✦
August86°65°3.2 in.5 mph13 h 40 min✦✦
September81°57°3.0 in.5 mph12 h 23 min✦✦✦
October69°46°3.2 in.7 mph11 h 6 min✦✦✦
November55°36°4.0 in.8 mph10 h 0 min✦✦
December43°28°3.5 in.8 mph9 h 28 min✦

Questions Readers Ask about Sumner in August

Answered from the wire & the Almanac

What is the weather like in Sumner in August?

Days average 30 °C (86 °F) and nights 18 °C (65 °F), with about 82 mm (3.2 in) of rain over the month. Days run hot, near 86° in the afternoon; ride early and rest at noon. Wet spells are common — about 3.2 in., the 8th wettest month.

Is August a good time to visit Sumner?

The Almanac gives August 2 of 5 (travel with care). The best months are May and October.

How long are the days in Sumner in August?

In mid-August the sun is up for about 13 h 40 min. The days are shortening — from 9 h 28 min in December to 14 h 52 min in June.

Does it snow in Sumner in August?

Hardly — August nights average 18 °C (65 °F), above freezing.

What should I pack for Sumner in August?

Linen, a wide hat, sun cream and water, plus a good raincoat — it is a wet month.

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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
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