Tucson climate

Tucson Weather in September

NOAA 1991-2020 normals for Tucson WFO, 2.7 km from Tucson

Average highs run from 98°F on September 1 to 91°F on September 30, and lows from 75°F to 67°F. Normal precipitation for the month is 1.70 in over about 3 wet days.

September day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Tucson, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
95°F
Average low
72°F
Precipitation
1.70 in
Record high
111°FSep 10, 2023
Record low
44°FSep 30, 1965
Chance of a freeze
0%
Days of 90°F or more
25.8
Daylight
12 h 49 min to 11 h 53 min
Cloud cover
33%
Humidity
43%
Dew point
52°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.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Sep 198°F75°F107°F 195064°F 195622%0%
Sep 298°F75°F106°F 194863°F 195122%0%
Sep 397°F75°F107°F 194862°F 197321%0%
Sep 497°F75°F110°F 202056°F 196120%0%
Sep 597°F75°F108°F 202063°F 198520%0%
Sep 697°F75°F107°F 202063°F 197619%0%
Sep 797°F74°F105°F 200061°F 197618%0%
Sep 897°F74°F105°F 199061°F 195018%0%
Sep 997°F74°F108°F 202362°F 198717%0%
Sep 1096°F74°F111°F 202356°F 202017%0%
Sep 1196°F73°F107°F 199058°F 198216%0%
Sep 1296°F73°F106°F 201758°F 195216%0%
Sep 1396°F73°F105°F 200052°F 195215%0%
Sep 1496°F73°F107°F 200057°F 198715%0%
Sep 1595°F72°F105°F 201856°F 195014%0%
Sep 1695°F72°F102°F 198856°F 195014%0%
Sep 1795°F72°F105°F 195659°F 197013%0%
Sep 1895°F71°F105°F 195657°F 199313%0%
Sep 1994°F71°F102°F 195657°F 199312%0%
Sep 2094°F71°F102°F 201050°F 196512%0%
Sep 2194°F70°F105°F 195447°F 196512%0%
Sep 2293°F70°F106°F 198951°F 196511%0%
Sep 2393°F70°F103°F 200153°F 198811%0%
Sep 2493°F69°F102°F 202056°F 196111%0%
Sep 2593°F69°F105°F 202454°F 195811%0%
Sep 2692°F68°F105°F 202454°F 198610%0%
Sep 2792°F68°F108°F 202455°F 197310%0%
Sep 2892°F68°F108°F 202456°F 198610%0%
Sep 2991°F67°F104°F 202450°F 196510%0%
Sep 3091°F67°F105°F 202444°F 196510%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Tucson, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MST).

September 1
sunrise 5:59 AM, sunset 6:48 PM
September 30
sunrise 6:17 AM, sunset 6:10 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00028815 (Tucson WFO), public domain. Records: NOAA GHCN-Daily, station USW00023160, 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.