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

Laon in September

The short of it: Laon in September averages a high of 21 °C (70 °F) and a low of 10 °C (50 °F), with 48 mm (1.9 in) of rain and about 12 h 31 min of daylight. Rated 4 of 5 for a visit; the best months are April and June. Source: TerraClimate climate normals, 1991–2020.

Average high 21° · low 10° · rain 48 mm · daylight 12 h 31 min

✦✦✦✦ Recommended for a visit · best months: April & June

September in Laon brings afternoons near 21° and nights around 10°, with about 48 mm of rain over the month. The year turns hard here: highs drop 4° from August to about 21°, with nights near 10°. Rain is modest, about 48 mm, the 11th wettest month.

The sun is up for about 12 h 31 min in mid-September, 114 minutes less than a month before.

For the traveller: pack light clothes and a jacket for the evening. The Almanac rates September 4 of 5 for a visit; the finest months here are April and June.

Against its neighbours, Laon runs warmer than most and wetter than most in September. Tergnier, 26 km to the WNW, sees much the same highs.

September in Laon, by the numbers

Warmth rank
4th warmest of 12
Rain rank
11th wettest of 12
Versus August
4° colder, 14 mm less rain
Versus October
5° warmer
Day–night spread
11°
Snow season
seldom any
Daylight, mid-month
12 h 31 min
Average wind
13 km/h

Neighbouring Towns

September averages · distance by the crow’s flight
TownDistanceHighLowRain
TergnierHauts-de-France26 km WNW21°10°45 mm
SoissonsHauts-de-France30 km SW21°10°46 mm
ChaunyHauts-de-France30 km WNW21°10°45 mm
GuiseHauts-de-France38 km N20°10°51 mm
GauchyHauts-de-France39 km NW21°10°47 mm
Saint-QuentinHauts-de-France40 km NW21°10°47 mm
TinqueuxGrand Est43 km SE21°10°46 mm
BéthenyGrand Est44 km SE22°10°47 mm

The Almanac · Laon Month by Month

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

The year turns hard here: highs drop 4° from August to about 21°, with nights near 10°. Rain is modest, about 48 mm, the 11th wettest month.

Climate of Laon by month
MonthHighLowRainWindDaylightVisit
January7°1°55 mm18 km/h8 h 35 min✦✦
February8°1°50 mm17 km/h10 h 2 min✦✦
March12°3°51 mm17 km/h11 h 44 min✦✦✦
April16°5°45 mm16 km/h13 h 40 min✦✦✦✦✦
May20°8°58 mm14 km/h15 h 20 min✦✦✦✦
June23°11°52 mm13 km/h16 h 16 min✦✦✦✦
July25°13°58 mm13 km/h15 h 53 min✦✦✦✦
August25°13°62 mm13 km/h14 h 25 min✦✦✦✦
September21°10°48 mm13 km/h12 h 31 min✦✦✦✦
October16°7°61 mm15 km/h10 h 39 min✦✦✦
November10°4°61 mm16 km/h9 h 0 min✦✦✦
December7°2°74 mm18 km/h8 h 10 min✦

Questions Readers Ask about Laon in September

Answered from the wire & the Almanac

What is the weather like in Laon in September?

Days average 21 °C (70 °F) and nights 10 °C (50 °F), with about 48 mm (1.9 in) of rain over the month. The year turns hard here: highs drop 4° from August to about 21°, with nights near 10°. Rain is modest, about 48 mm, the 11th wettest month.

Is September a good time to visit Laon?

The Almanac gives September 4 of 5 (recommended). The best months are April and June.

How long are the days in Laon in September?

In mid-September the sun is up for about 12 h 31 min. The days are shortening — from 8 h 10 min in December to 16 h 16 min in June.

Does it snow in Laon in September?

Hardly — September nights average 10 °C (50 °F), above freezing.

What should I pack for Laon in September?

Light clothes and a jacket for the evening.

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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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