Royal City Weather in September
Average highs run from 87°F on September 1 to 76°F on September 30, and lows from 53°F to 44°F.
September day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 82°F
- Average low
- 49°F
- Record high
- 100°FSep 2, 1950
- Record low
- 27°FSep 23, 2000
- Chance of a freeze
- 9%
- Days of 90°F or more
- 5.3
- Daylight
- 13 h 20 min to 11 h 44 min
- Cloud cover
- 43%
- Humidity
- 46%
- Dew point
- 42°F
- Wind
- 7.2 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 87°F | 53°F | 98°F 1998 | 38°F 1999 | |
| Sep 2 | 87°F | 53°F | 100°F 1950 | 40°F 1999 | |
| Sep 3 | 86°F | 52°F | 98°F 2006 | 38°F 2000 | |
| Sep 4 | 86°F | 52°F | 100°F 2020 | 38°F 2015 | |
| Sep 5 | 86°F | 52°F | 97°F 1955 | 43°F 2002 | |
| Sep 6 | 85°F | 52°F | 98°F 2024 | 41°F 2002 | |
| Sep 7 | 85°F | 51°F | 100°F 2024 | 43°F 2002 | |
| Sep 8 | 85°F | 51°F | 98°F 2011 | 40°F 2001 | |
| Sep 9 | 85°F | 51°F | 99°F 2011 | 41°F 1962 | |
| Sep 10 | 84°F | 50°F | 100°F 2011 | 41°F 2003 | |
| Sep 11 | 84°F | 50°F | 99°F 1953 | 39°F 2014 | |
| Sep 12 | 84°F | 50°F | 99°F 2013 | 37°F 2014 | |
| Sep 13 | 83°F | 49°F | 96°F 2013 | 38°F 2018 | |
| Sep 14 | 83°F | 49°F | 94°F 2000 | 37°F 2016 | |
| Sep 15 | 83°F | 49°F | 96°F 2013 | 39°F 2015 | |
| Sep 16 | 82°F | 49°F | 91°F 1998 | 36°F 1965 | |
| Sep 17 | 82°F | 48°F | 95°F 2008 | 32°F 1965 | |
| Sep 18 | 81°F | 48°F | 92°F 1952 | 36°F 1965 | |
| Sep 19 | 81°F | 48°F | 89°F 2025 | 34°F 1957 | |
| Sep 20 | 81°F | 47°F | 91°F 2014 | 36°F 2016 | |
| Sep 21 | 80°F | 47°F | 90°F 2014 | 35°F 1961 | |
| Sep 22 | 80°F | 47°F | 89°F 1952 | 32°F 1961 | |
| Sep 23 | 79°F | 46°F | 90°F 2001 | 27°F 2000 | |
| Sep 24 | 79°F | 46°F | 90°F 1952 | 30°F 2000 | |
| Sep 25 | 79°F | 46°F | 93°F 1952 | 34°F 2000 | |
| Sep 26 | 78°F | 45°F | 88°F 1952 | 35°F 1951 | |
| Sep 27 | 78°F | 45°F | 90°F 1963 | 33°F 1999 | |
| Sep 28 | 77°F | 45°F | 91°F 1963 | 30°F 1999 | |
| Sep 29 | 77°F | 44°F | 85°F 2003 | 33°F 2007 | |
| Sep 30 | 76°F | 44°F | 86°F 2008 | 32°F 2024 |
Chance of rain
Sunrise and sunset
Times for 2026, local time (PDT).
- September 1
- sunrise 6:18 AM, sunset 7:38 PM
- September 30
- sunrise 6:56 AM, sunset 6:40 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00457727 (Smyrna), public domain. Records: NOAA GHCN-Daily, station USW00024110, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: 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.