Rietberg Weather in September
Average highs run from 21°C on September 1 to 17°C on September 30, and lows from 11°C to 8°C. Normal precipitation for the month is 63 mm over about 12 wet days.
September day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 19°C
- Average low
- 10°C
- Precipitation
- 63 mm
- Record high
- 33°CSep 5, 1949
- Record low
- -2°CSep 28, 1939
- Daylight
- 13 h 35 min to 11 h 41 min
- Cloud cover
- 68%
- Humidity
- 78%
- Dew point
- 10°C
- Wind
- 15.1 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 21°C | 11°C | 31°C 1961 | 2°C 1959 | 45% |
| Sep 2 | 21°C | 11°C | 31°C 1961 | 3°C 1959 | 44% |
| Sep 3 | 21°C | 11°C | 29°C 1962 | 3°C 1959 | 42% |
| Sep 4 | 21°C | 11°C | 31°C 1949 | 5°C 1957 | 43% |
| Sep 5 | 21°C | 11°C | 33°C 1949 | 5°C 1972 | 43% |
| Sep 6 | 20°C | 11°C | 31°C 1949 | 3°C 1993 | 42% |
| Sep 7 | 20°C | 11°C | 26°C 1958 | 3°C 1996 | 42% |
| Sep 8 | 20°C | 11°C | 28°C 1939 | 4°C 1983 | 42% |
| Sep 9 | 20°C | 11°C | 28°C 1999 | 3°C 1986 | 42% |
| Sep 10 | 20°C | 10°C | 28°C 1959 | 4°C 1985 | 43% |
| Sep 11 | 20°C | 10°C | 30°C 1959 | 2°C 1944 | 41% |
| Sep 12 | 20°C | 10°C | 30°C 1959 | 2°C 1944 | 40% |
| Sep 13 | 20°C | 10°C | 31°C 1951 | 2°C 1964 | 39% |
| Sep 14 | 19°C | 10°C | 29°C 1964 | 3°C 1959 | 38% |
| Sep 15 | 19°C | 10°C | 28°C 1958 | 1°C 1971 | 37% |
| Sep 16 | 19°C | 10°C | 30°C 1961 | 0°C 1971 | 37% |
| Sep 17 | 19°C | 9°C | 30°C 1961 | 3°C 1996 | 35% |
| Sep 18 | 19°C | 9°C | 29°C 1989 | 0°C 1977 | 36% |
| Sep 19 | 19°C | 9°C | 28°C 1961 | 0°C 1977 | 36% |
| Sep 20 | 19°C | 9°C | 28°C 1961 | 0°C 1952 | 36% |
| Sep 21 | 19°C | 9°C | 26°C 1980 | 1°C 1959 | 36% |
| Sep 22 | 18°C | 9°C | 26°C 1989 | 3°C 1948 | 36% |
| Sep 23 | 18°C | 9°C | 26°C 1971 | 1°C 1943 | 36% |
| Sep 24 | 18°C | 9°C | 27°C 1949 | 0°C 1970 | 38% |
| Sep 25 | 18°C | 9°C | 28°C 1949 | 0°C 1939 | 38% |
| Sep 26 | 18°C | 9°C | 27°C 1967 | 2°C 1972 | 40% |
| Sep 27 | 18°C | 9°C | 26°C 1948 | 1°C 1939 | 41% |
| Sep 28 | 17°C | 8°C | 27°C 1961 | -2°C 1939 | 43% |
| Sep 29 | 17°C | 8°C | 27°C 1938 | 0°C 1979 | 45% |
| Sep 30 | 17°C | 8°C | 25°C 1975 | 0°C 1940 | 45% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- September 1
- sunrise 6:38 AM, sunset 8:13 PM
- September 30
- sunrise 7:25 AM, sunset 7:06 PM
Other months
Sources
Records: NOAA GHCN-Daily, station GME00123178, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.