September weather in Royal City, WA
The average temperature in Royal City in September is 65.3°F (48.6°F–82.0°F). Average precipitation: inches.
September is a fall month in Royal City, and is warmer than the annual average of 53.4°F. Daily temperatures swing about 33.4°F between overnight low and afternoon high. Daylight averages about 12h 19m. For travel, September is a comfortable month to visit.
Avg High
82.0°F
Avg Low
48.6°F
Precipitation
in
Daylight
12h 19m
September records in Royal City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.9°F (1998) | 37.9°F (2006) | 0.12 in (1981) |
| September 2 | 102.9°F (1998) | 39.9°F (1959) | 0.41 in (1971) |
| September 3 | 102.0°F (1998) | 39.0°F (1980) | 0.22 in (1997) |
| September 4 | 100.9°F (1988) | 37.9°F (1962) | 0.33 in (1960) |
| September 5 | 102.0°F (1955) | 37.0°F (1956) | 0.00 in (1951) |
| September 6 | 102.0°F (1955) | 39.0°F (1992) | 0.75 in (1971) |
| September 7 | 98.1°F (1958) | 39.9°F (1965) | 0.74 in (1995) |
| September 8 | 98.1°F (1963) | 32.0°F (1962) | 0.06 in (1995) |
| September 9 | 100.0°F (1963) | 32.0°F (1962) | 0.30 in (1985) |
| September 10 | 98.1°F (1993) | 37.0°F (1970) | 0.29 in (1985) |
| September 11 | 100.0°F (1953) | 37.9°F (1988) | 0.05 in (1985) |
| September 12 | 99.0°F (1973) | 32.0°F (1962) | 0.01 in (1962) |
| September 13 | 96.1°F (1981) | 35.1°F (1970) | 0.27 in (1955) |
| September 14 | 95.0°F (2000) | 34.0°F (1952) | 0.76 in (1980) |
| September 15 | 96.1°F (1957) | 30.9°F (1970) | 0.58 in (1959) |
| September 16 | 97.0°F (1981) | 33.1°F (1962) | 0.24 in (1986) |
| September 17 | 96.1°F (1952) | 28.9°F (1965) | 0.20 in (1997) |
| September 18 | 98.1°F (1952) | 30.9°F (1965) | 0.32 in (1983) |
| September 19 | 98.1°F (1981) | 30.9°F (1957) | 0.22 in (1959) |
| September 20 | 91.9°F (1952) | 30.0°F (1983) | 0.15 in (1973) |
| September 21 | 91.9°F (1979) | 30.9°F (1983) | 0.07 in (1986) |
| September 22 | 91.9°F (1952) | 33.1°F (1956) | 0.15 in (1973) |
| September 23 | 93.0°F (1952) | 26.1°F (2000) | 0.48 in (1984) |
| September 24 | 96.1°F (1952) | 28.0°F (1958) | 0.60 in (1986) |
| September 25 | 98.1°F (1952) | 28.9°F (2000) | 0.25 in (1959) |
| September 26 | 93.9°F (1952) | 28.9°F (1972) | 0.32 in (1982) |
| September 27 | 93.9°F (1962) | 28.0°F (1951) | 0.45 in (1955) |
| September 28 | 93.0°F (1963) | 28.9°F (1999) | 0.40 in (1962) |
| September 29 | 91.9°F (1963) | 26.1°F (1983) | 0.23 in (1971) |
| September 30 | 89.1°F (1976) | 26.1°F (1983) | 0.12 in (2007) |