Weather in Hamm

Forecast: MOSMIX (DWD-Statistik über ICON + ECMWF) · Run 07.08. 23:00 Uhr · Station HAMM (0,4 km from the centre) · own station correction −0,3 °C (from our station comparison). We show where our data comes from – and how often we get it wrong. Measured against official stations, we were recently off by ±1,1 °C here (up to 24 h), rain forecast 98 % correct.
Today: settled weather – historically easy to forecast.
We beat the "same as yesterday" rule of thumb by 57 %.

Now · as of 06:00

10°klar

Later today

High · 17:00 Uhr26° Low10°

4 km/h aus O 14 % 99 % 1023 hPa Rain last 24 h 0,0 mm (measured, as of 05:00) 06:03 21:04 abnehmende Sichel (24 %)

Rain Radar

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The next few days

Day	Min	Max	Risk	Sun
Sa, 08.08.	10°	26°	1 %	12,4 h	06:03	21:04
So, 09.08.	13°	30° 16:00	4 %	10,3 h	06:05	21:03
Mo, 10.08.	18°	27° 13:00	6 %	7,9 h	06:06	21:01
Di, 11.08.	13°	24° 17:00	4 %	10,2 h	06:08	20:59
Mi, 12.08.	11°	27° 17:00	1 %	12,2 h	06:10	20:57
Do, 13.08.	13°	30° 17:00	3 %	11,8 h	06:11	20:55
Fr, 14.08.	16°	32° 17:00	3 %	10,8 h	06:13	20:53
Sa, 15.08.	17°	28° 16:00	10 %	9,1 h	06:14	20:51
So, 16.08.	16°	26° 18:00	20 %	7,9 h	06:16	20:49
Mo, 17.08.	16°	24° 16:00	16 %	7,1 h	06:18	20:47

Outlook: the next few weeks

A genuine day-by-day forecast only reaches about 10 days out – anything beyond that is statistics, not a forecast. That's why we don't show a 30- or 90-day outlook. What can be honestly stated is the long-term normal: in Hamm the average temperature in August is 18,5 °C, in September it's 14,7 °C (1991-2020 climate mean for the local climate station, see below). We show openly how often our forecast actually holds up.

How reliable is the forecast?

How our forecast daily high has shifted across recent runs. Flat line = the forecast is holding, jittery = still shifting.

Sa, 08.08.26° wackelt noch (±0,9 °C über 12 Läufe)

So, 09.08.30° wackelt noch (±1,9 °C über 12 Läufe)

Mo, 10.08.27° wackelt noch (±1,8 °C über 12 Läufe)

Di, 11.08.24° wackelt noch (±1,8 °C über 12 Läufe)

Today at a glanceSa, 08.08.

Garden no frost

Low of 6,3 °C in 48 h, 0,0 mm rain in 24 h. Spray/watering window: 06:00 to 05:00 (48 h) – dry, calm, stays dry afterwards. Product-dependent – check the label.

Outdoors dry

06:00 to 05:00 (48 h) · gusts up to 26 km/h.

Pollen Beifuß: mittlere bis hohe Belastung

Also Gräser geringe load.

Region Rhein.-Westfäl. Tiefland · Stand 07.08., 11:00 Uhr · DWD-Pollenflugvorhersage

Balcony solar: today ≈ 4,42 kWh per kWp, tomorrow 4,04 kWh · Best 2 h for high loads today: 14:00 to 15:00 (south, vertical) – adjust to your orientation in the app.

Gauge Hamm Uw (Datteln-Hamm-Kanal): 57 cm · gauge station 0,2 km away · source: WSV

Climate in Hamm (1991-2020)

The warmest month in Hamm is Juli (avg 18,8 °C), the coldest is Januar (avg 2,9 °C). The most rain falls in Juli (avg 85,2 mm), the least in April (avg 40,1 mm). The sunniest month is Juli (avg 210,0 h).

Annual mean 10,5 °C, 762 mm precipitation, 1590 hours of sunshine. Weather station Werl (12,4 km away).

Record on 08.08.: 34,8 °C (2020), coldest value 8,2 °C (2022), highest rainfall 21,4 mm (2007) – series since 1975