Weather in Mainz

Forecast: MOSMIX (DWD-Statistik über ICON + ECMWF) · Run 21.09. 23:00 Uhr · Station MAINZ (1,0 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 ±1,5 °C here (up to 24 h), rain forecast 89 % correct.
Today: settled weather – historically easy to forecast.
We beat the "same as yesterday" rule of thumb by 56 %.

Now · as of 06:00

9°wolkig

Later today

High · 16:00 Uhr19° Low9°

4 km/h aus NO 58 % 89 % 1029 hPa Rain last 24 h 0,0 mm (measured, as of 05:00) 07:14 19:24 waxing gibbous (82 %)

Rain Radar

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The next few days

Day	Min	Max	Risk	Sun
Di, 22.09.	9°	19°	3 %	6,3 h	07:14	19:24
Mi, 23.09.	8°	20° 17:00	1 %	10,2 h	07:15	19:22
Do, 24.09.	11°	19° 16:00	8 %	6,4 h	07:17	19:20
Fr, 25.09.	7°	21° 17:00	2 %	9,7 h	07:18	19:18
Sa, 26.09.	8°	22° 16:00	3 %	10,5 h	07:20	19:15
So, 27.09.	11°	24° 16:00	5 %	8,8 h	07:21	19:13
Mo, 28.09.	13°	24° 16:00	7 %	7,5 h	07:23	19:11
Di, 29.09.	13°	23° 16:00	7 %	6,9 h	07:24	19:09
Mi, 30.09.	14°	23° 16:00	6 %	6,9 h	07:26	19:07
Do, 01.10.	14°	22° 16:00	8 %	6,6 h	07:27	19:04

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 Mainz the average temperature in September is 15,4 °C, in October it's 10,4 °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.

Di, 22.09.19° wackelt noch (±1,7 °C über 12 Läufe)

Mi, 23.09.20° wackelt noch (±1,9 °C über 12 Läufe)

Do, 24.09.19° wackelt noch (±2,1 °C über 12 Läufe)

Fr, 25.09.21° wackelt noch (±1,5 °C über 12 Läufe)

Today at a glanceDi, 22.09.

Garden no frost

Low of 4,7 °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 22 km/h.

Pollen Grasses: none to low load

Also Ragweed none to low load.

Region Rhein-Main · As of 21.09., 11:00 Uhr · DWD pollen forecast

Balcony solar: today ≈ 3,29 kWh per kWp, tomorrow 4,24 kWh · Best 2 h for high loads today: 14:00 to 15:00 (south, vertical) – adjust to your orientation in the app.

Climate in Mainz (1991-2020)

The warmest month in Mainz is Juli (avg 20,2 °C), the coldest is Januar (avg 2,1 °C). The most rain falls in Juli (avg 61,1 mm), the least in April (avg 38,1 mm). The sunniest month is Juli (avg 231,9 h).

Annual mean 10,8 °C, 579 mm precipitation, 1676 hours of sunshine, 51 frost days. Weather station Mainz-Lerchenberg (ZDF) (5,1 km away).

Record on 22.09.: 28,1 °C (2020), coldest value 2,1 °C (1887), highest rainfall 27,8 mm (1981) – series since 1884

Weather nearby

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