Weather in Bonn

Forecast: MOSMIX (DWD-Statistik über ICON + ECMWF) · Run 07.08. 23:00 Uhr · Station BONN-FRIESDORF (5,2 km from the centre) · own station correction −0,8 °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 ±1,4 °C here (up to 24 h), rain forecast 96 % correct.
Today: settled weather – historically easy to forecast.
We beat the "same as yesterday" rule of thumb by 57 %.

Now · as of 06:00

11°klar

Later today

High · 18:00 Uhr28° Low11°

4 km/h aus SW 2 % 89 % 1023 hPa Rain last 24 h 0,0 mm (measured, as of 05:00) 06:09 21:04 abnehmende Sichel (24 %)

Rain Radar

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The next few days

Day	Min	Max	Risk	Sun
Sa, 08.08.	11°	28°	3 %	13,4 h	06:09	21:04
So, 09.08.	15°	29° 16:00	2 %	10,1 h	06:11	21:02
Mo, 10.08.	18°	29° 15:00	2 %	10,2 h	06:12	21:01
Di, 11.08.	15°	25° 17:00	1 %	11,7 h	06:14	20:59
Mi, 12.08.	12°	28° 17:00	2 %	13,2 h	06:15	20:57
Do, 13.08.	15°	31° 17:00	2 %	12,7 h	06:17	20:55
Fr, 14.08.	18°	32° 16:00	5 %	12,2 h	06:18	20:53
Sa, 15.08.	18°	29° 17:00	6 %	11,0 h	06:20	20:51
So, 16.08.	18°	27° 16:00	8 %	9,6 h	06:21	20:49
Mo, 17.08.	16°	24° 16:00	14 %	7,1 h	06:23	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 Bonn the average temperature in August is 19,0 °C, in September it's 15,2 °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, 08.08.28° stabil (±0,5 °C über 12 Läufe)

So, 09.08.29° wackelt noch (±1,9 °C über 12 Läufe)

Mo, 10.08.29° wackelt noch (±2,3 °C über 12 Läufe)

Di, 11.08.25° wackelt noch (±1,0 °C über 12 Läufe)

Today at a glanceSa, 08.08.

Garden no frost

Low of 8,2 °C in 48 h, 0,0 mm rain in 24 h. Spray/watering window: 06:00 to 16:00 (35 h) – dry, calm, stays dry afterwards. Product-dependent – check the label.

Outdoors dry

06:00 to 05:00 (48 h) · gusts up to 18 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 ≈ 4,50 kWh per kWp, tomorrow 3,58 kWh · Best 2 h for high loads today: 14:00 to 15:00 (south, vertical) – adjust to your orientation in the app.

Climate in Bonn (1991-2020)

The warmest month in Bonn is Juli (avg 19,5 °C), the coldest is Januar (avg 3,2 °C). The most rain falls in Juli (avg 71,2 mm), the least in April (avg 36,9 mm). The sunniest month is Juli (avg 212,3 h).

Annual mean 11,0 °C, 637 mm precipitation, 1595 hours of sunshine, 61 frost days. Weather station Bonn (1,3 km away).

Record on 08.08.: 38,0 °C (2003), coldest value 6,2 °C (1953), highest rainfall 22,0 mm (1957) – series since 1937