Sierra Vista Weather in September
Average highs run from 89°F on September 1 to 84°F on September 30, and lows from 60°F to 52°F. Normal precipitation for the month is 1.31 in over about 5 wet days.
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
- 87°F
- Average low
- 57°F
- Precipitation
- 1.31 in
- Record high
- 103°FSep 11, 2023
- Record low
- 43°FSep 25, 2000
- Chance of a freeze
- 0%
- Days of 90°F or more
- 11.2
- Daylight
- 12 h 48 min to 11 h 53 min
- Cloud cover
- 35%
- Humidity
- 50%
- Dew point
- 51°F
- Wind
- 6.9 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Sep 1 | 89°F | 60°F | 99°F 2011 | 55°F 2000 | 25% | 0% |
| Sep 2 | 89°F | 60°F | 98°F 2011 | 56°F 2024 | 25% | 0% |
| Sep 3 | 89°F | 60°F | 97°F 1982 | 55°F 2018 | 24% | 0% |
| Sep 4 | 89°F | 60°F | 97°F 2002 | 55°F 1989 | 24% | 0% |
| Sep 5 | 89°F | 60°F | 100°F 2020 | 54°F 1984 | 23% | 0% |
| Sep 6 | 89°F | 59°F | 97°F 2020 | 53°F 1984 | 22% | 0% |
| Sep 7 | 88°F | 59°F | 101°F 2023 | 53°F 1984 | 22% | 0% |
| Sep 8 | 88°F | 59°F | 97°F 2020 | 54°F 1984 | 21% | 0% |
| Sep 9 | 88°F | 59°F | 96°F 1983 | 54°F 1985 | 20% | 0% |
| Sep 10 | 88°F | 58°F | 101°F 2023 | 52°F 2024 | 20% | 0% |
| Sep 11 | 88°F | 58°F | 103°F 2023 | 51°F 1986 | 19% | 0% |
| Sep 12 | 88°F | 58°F | 98°F 1983 | 52°F 1982 | 19% | 0% |
| Sep 13 | 87°F | 58°F | 97°F 2004 | 52°F 2004 | 18% | 0% |
| Sep 14 | 87°F | 57°F | 96°F 2000 | 52°F 2016 | 17% | 0% |
| Sep 15 | 87°F | 57°F | 97°F 2018 | 51°F 1996 | 17% | 0% |
| Sep 16 | 87°F | 57°F | 95°F 2018 | 52°F 1996 | 16% | 0% |
| Sep 17 | 87°F | 57°F | 95°F 2018 | 51°F 2012 | 16% | 0% |
| Sep 18 | 87°F | 56°F | 96°F 1988 | 52°F 1988 | 15% | 0% |
| Sep 19 | 86°F | 56°F | 95°F 1997 | 50°F 1993 | 15% | 0% |
| Sep 20 | 86°F | 56°F | 93°F 1982 | 48°F 1985 | 14% | 0% |
| Sep 21 | 86°F | 55°F | 96°F 1989 | 48°F 1985 | 14% | 0% |
| Sep 22 | 86°F | 55°F | 95°F 1989 | 48°F 1985 | 13% | 0% |
| Sep 23 | 86°F | 55°F | 94°F 2012 | 47°F 1985 | 13% | 0% |
| Sep 24 | 85°F | 54°F | 94°F 1982 | 46°F 1986 | 12% | 0% |
| Sep 25 | 85°F | 54°F | 95°F 1982 | 43°F 2000 | 12% | 0% |
| Sep 26 | 85°F | 54°F | 95°F 2005 | 45°F 2017 | 12% | 0% |
| Sep 27 | 85°F | 53°F | 96°F 2023 | 47°F 1986 | 11% | 0% |
| Sep 28 | 84°F | 53°F | 95°F 2023 | 47°F 1986 | 11% | 0% |
| Sep 29 | 84°F | 53°F | 96°F 2024 | 45°F 1985 | 11% | 0% |
| Sep 30 | 84°F | 52°F | 92°F 1989 | 47°F 1986 | 11% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- September 1
- sunrise 5:57 AM, sunset 6:45 PM
- September 30
- sunrise 6:14 AM, sunset 6:07 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00027880 (Sierra Vista), public domain. Records: NOAA GHCN-Daily, station USC00027880, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.