September weather in Ritzville, WA
The average temperature in Ritzville in September is 61.4°F (46.1°F–76.6°F). Average precipitation: 0.43 inches.
September is a fall month in Ritzville, and is warmer than the annual average of 48.7°F. Daily temperatures swing about 30.5°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 12h 19m. For travel, September is a comfortable month to visit.
Avg High
76.6°F
Avg Low
46.1°F
Precipitation
0.43 in
Daylight
12h 19m
September records in Ritzville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (1967) | 37.0°F (2008) | 0.29 in (1959) |
| September 2 | 100.0°F (1938) | 35.1°F (1932) | 0.29 in (1971) |
| September 3 | 100.9°F (1950) | 35.1°F (1980) | 0.60 in (1941) |
| September 4 | 102.9°F (1988) | 37.0°F (1948) | 0.40 in (1911) |
| September 5 | 100.0°F (1988) | 33.1°F (1969) | 0.60 in (1911) |
| September 6 | 99.0°F (1955) | 34.0°F (1961) | 0.57 in (2015) |
| September 7 | 100.0°F (1944) | 33.1°F (1976) | 1.48 in (1900) |
| September 8 | 98.1°F (1944) | 30.0°F (1922) | 0.56 in (1995) |
| September 9 | 97.0°F (1981) | 32.0°F (1970) | 0.58 in (1911) |
| September 10 | 97.0°F (1935) | 33.1°F (1972) | 0.35 in (1927) |
| September 11 | 96.1°F (1944) | 34.0°F (1970) | 0.71 in (1927) |
| September 12 | 100.0°F (1953) | 32.0°F (1921) | 0.52 in (1920) |
| September 13 | 96.1°F (1923) | 26.1°F (1921) | 0.85 in (1927) |
| September 14 | 93.9°F (1937) | 27.0°F (1970) | 0.83 in (1927) |
| September 15 | 96.1°F (2000) | 28.0°F (1970) | 0.57 in (1959) |
| September 16 | 96.1°F (1937) | 32.0°F (1978) | 0.66 in (1954) |
| September 17 | 99.0°F (1938) | 30.9°F (1955) | 0.47 in (1954) |
| September 18 | 100.0°F (1981) | 30.9°F (1926) | 0.30 in (1978) |
| September 19 | 95.0°F (1922) | 28.0°F (1957) | 0.45 in (1988) |
| September 20 | 91.0°F (2008) | 28.9°F (1924) | 0.79 in (1973) |
| September 21 | 96.1°F (1939) | 30.0°F (1941) | 0.49 in (1910) |
| September 22 | 95.0°F (1967) | 28.9°F (1946) | 0.54 in (1945) |
| September 23 | 96.1°F (1966) | 27.0°F (1926) | 0.92 in (1984) |
| September 24 | 96.1°F (2001) | 19.9°F (1926) | 0.74 in (1973) |
| September 25 | 95.0°F (1952) | 26.1°F (1972) | 0.21 in (1977) |
| September 26 | 99.0°F (1952) | 26.1°F (1926) | 0.47 in (1982) |
| September 27 | 98.1°F (1948) | 23.0°F (1972) | 0.72 in (1959) |
| September 28 | 97.0°F (1963) | 26.1°F (1972) | 0.61 in (1955) |
| September 29 | 95.0°F (1963) | 30.0°F (1983) | 0.68 in (2019) |
| September 30 | 89.1°F (1989) | 26.1°F (1933) | 0.22 in (1951) |