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

Iserlohn in January

The short of it: Iserlohn in January averages a high of 5 °C (41 °F) and a low of -0 °C (31 °F), with 100 mm (3.9 in) of rain and about 8 h 20 min of daylight. Rated 1 of 5 for a visit; the best months are May and July. Source: TerraClimate climate normals, 1991–2020.

Average high 5° · low 0° · rain 100 mm · daylight 8 h 20 min

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

Thirty years of records give Iserlohn an average January high of 5°, a low of 0° and some 100 mm of rain. The dead of winter in Iserlohn: highs scarcely reach 5°, nights fall to 0°. Wet spells are common — about 100 mm, the 4th wettest month. Snow lies on the ground; mind the passes.

The sun is up for about 8 h 20 min in mid-January, 27 minutes more than a month before.

For the traveller: pack a heavy coat, gloves and a scarf, and an oilskin besides. The Almanac rates January 1 of 5 for a visit; the finest months here are May and July.

Against its neighbours, Iserlohn runs cooler than most and about as wet in January. Hagen, 16 km to the W, sees much the same highs.

January in Iserlohn, by the numbers

Warmth rank
12th warmest of 12
Rain rank
4th wettest of 12
Versus December
1° colder, 3.0 mm less rain
Versus February
1° colder
Day–night spread
5°
Snow season
Dec–Feb
Daylight, mid-month
8 h 20 min
Average wind
15 km/h

Neighbouring Towns

January averages · distance by the crow’s flight
TownDistanceHighLowRain
HagenNorth Rhine-Westphalia16 km W5°0°101 mm
UnnaNorth Rhine-Westphalia18 km N6°0°82 mm
LüdenscheidNorth Rhine-Westphalia18 km SSW4°-1°134 mm
DortmundNorth Rhine-Westphalia23 km NW6°0°78 mm
WittenNorth Rhine-Westphalia25 km WNW6°0°93 mm
ArnsbergNorth Rhine-Westphalia26 km E5°-1°102 mm
LünenNorth Rhine-Westphalia29 km NNW6°0°73 mm
Castrop-RauxelNorth Rhine-Westphalia34 km NW6°1°83 mm

The Almanac · Iserlohn Month by Month

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

The dead of winter in Iserlohn: highs scarcely reach 5°, nights fall to 0°. Wet spells are common — about 100 mm, the 4th wettest month. Snow lies on the ground; mind the passes.

Climate of Iserlohn by month
MonthHighLowRainWindDaylightVisit
January5°0°100 mm15 km/h8 h 20 min✦
February6°-1°80 mm15 km/h9 h 54 min✦
March10°1°70 mm14 km/h11 h 42 min✦✦
April14°4°54 mm12 km/h13 h 47 min✦✦✦
May18°8°68 mm12 km/h15 h 34 min✦✦✦✦
June21°11°76 mm11 km/h16 h 35 min✦✦✦
July23°13°111 mm11 km/h16 h 10 min✦✦✦
August23°12°101 mm11 km/h14 h 35 min✦✦✦
September18°9°80 mm11 km/h12 h 33 min✦✦✦
October14°6°78 mm13 km/h10 h 33 min✦✦
November9°3°89 mm13 km/h8 h 47 min✦
December6°1°103 mm14 km/h7 h 52 min✦

Questions Readers Ask about Iserlohn in January

Answered from the wire & the Almanac

What is the weather like in Iserlohn in January?

Days average 5 °C (41 °F) and nights -0 °C (31 °F), with about 100 mm (3.9 in) of rain over the month. The dead of winter in Iserlohn: highs scarcely reach 5°, nights fall to 0°. Wet spells are common — about 100 mm, the 4th wettest month. Snow lies on the ground; mind the passes.

Is January a good time to visit Iserlohn?

The Almanac gives January 1 of 5 (travel with care). The best months are May and July.

How long are the days in Iserlohn in January?

In mid-January the sun is up for about 8 h 20 min. The days are lengthening — from 7 h 52 min in December to 16 h 35 min in June.

Does it snow in Iserlohn in January?

Yes — snow usually lies on the ground in January.

What should I pack for Iserlohn in January?

A heavy coat, gloves, a hat and a scarf, 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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