Yuma weather in September: Yuma, Arizona: normal highs, lows, rain and records for September
Yuma in September has a normal high of 101°F and a normal low of 78°F, a daily mean of 90°F, falling from 105°F on the 1st to 96°F by the 30th. Measurable precipitation falls on 2 days in a normal September, 0.68 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 39°C and low of 25°C, 17 mm of precipitation in September.
- NOAA stationYuma Marine Corps Air Station
- Station IDUSW00003145
- Location32.65°N 114.62°W
- Elevation213 ft (65 m)
- Population103,559
- Jan 70° 48°
- Feb 73° 50°
- Mar 80° 55°
- Apr 86° 60°
- May 94° 67°
- Jun 103° 75°
- Jul 107° 83°
- Aug 106° 83°
- Sep 101° 78°
- Oct 90° 66°
- Nov 78° 54°
- Dec 68° 47°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Yuma in September?
The normal high is 101°F and the normal low 78°F, for a daily mean of 89.5°F. September is 5.3°F cooler than August and 11.5°F warmer than October. September is the 3rd warmest month of the year in Yuma and the wettest. Across the month the normal high falls 9°F, from 105°F on September 1 to 96°F on September 30. From one year to the next September's mean temperature typically moves about 1.6°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 88°F and 91°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 6%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 105°F | 82°F | 6% | 3% |
| September 8 | 104°F | 80°F | 5% | 3% |
| September 15 | 102°F | 78°F | 5% | 3% |
| September 22 | 99°F | 76°F | 4% | 2% |
| September 30 | 96°F | 72°F | 3% | 2% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 105°F | 82°F | 6% | 3% | 12 h 50 min |
| September 2 | 105°F | 82°F | 6% | 3% | 12 h 50 min |
| September 3 | 105°F | 81°F | 6% | 3% | 12 h 50 min |
| September 4 | 105°F | 81°F | 6% | 3% | 12 h 50 min |
| September 5 | 105°F | 81°F | 6% | 3% | 12 h 40 min |
| September 6 | 104°F | 81°F | 6% | 3% | 12 h 40 min |
| September 7 | 104°F | 81°F | 5% | 3% | 12 h 40 min |
| September 8 | 104°F | 80°F | 5% | 3% | 12 h 40 min |
| September 9 | 104°F | 80°F | 5% | 3% | 12 h 40 min |
| September 10 | 103°F | 80°F | 5% | 3% | 12 h 30 min |
| September 11 | 103°F | 79°F | 5% | 3% | 12 h 30 min |
| September 12 | 103°F | 79°F | 5% | 3% | 12 h 30 min |
| September 13 | 103°F | 79°F | 5% | 3% | 12 h 30 min |
| September 14 | 102°F | 79°F | 5% | 3% | 12 h 30 min |
| September 15 | 102°F | 78°F | 5% | 3% | 12 h 30 min |
| September 16 | 102°F | 78°F | 4% | 3% | 12 h 20 min |
| September 17 | 101°F | 77°F | 4% | 3% | 12 h 20 min |
| September 18 | 101°F | 77°F | 4% | 3% | 12 h 20 min |
| September 19 | 101°F | 77°F | 4% | 2% | 12 h 20 min |
| September 20 | 100°F | 76°F | 4% | 2% | 12 h 20 min |
| September 21 | 100°F | 76°F | 4% | 2% | 12 h 10 min |
| September 22 | 99°F | 76°F | 4% | 2% | 12 h 10 min |
| September 23 | 99°F | 75°F | 4% | 2% | 12 h 10 min |
| September 24 | 99°F | 75°F | 4% | 2% | 12 h 10 min |
| September 25 | 98°F | 74°F | 4% | 2% | 12 h 10 min |
| September 26 | 98°F | 74°F | 3% | 2% | 12 h |
| September 27 | 98°F | 74°F | 3% | 2% | 12 h |
| September 28 | 97°F | 73°F | 3% | 2% | 12 h |
| September 29 | 97°F | 73°F | 3% | 2% | 12 h |
| September 30 | 96°F | 72°F | 3% | 2% | 12 h |
- Normal high
- 101°FSeptember average
- Normal low
- 78°FSeptember average
- Precipitation
- 0.68 inmonth total
- Days with precipitation
- 20.01 inch or more
- Days at 90°F or more
- 29
- Daylight
- 12 h 50 min to 12 hSeptember 1 to September 30
- Days at 70°F or more
- 30
- Days at 80°F or more
- 30
- Sunshine
- 95%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00003145; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Yuma in September?
On a given September day the chance of 0.01 inch or more is 4% on average, highest around September 1 (6%). In all, 0.68 in falls on 2 days of a normal September.
In a normal September in Yuma, 29 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00003145.
What are the records for September in Yuma?
The warmest September temperature on Yuma's official record (since 1878) is 123°F, on September 1, 1950; the coldest is 50°F, on September 18, 1882. The wettest September brought 5.14 in (1997).
The September mean against the 1991-2020 normal of 89.5°F: 2021 90.4°F (+0.9), 2022 91.0°F (+1.5), 2023 87.8°F (−1.7), 2025 88.3°F (−1.2), 2026 90.7°F (+1.2). 3 of 5 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 90.4°F | +0.9°F | 0.00 in |
| 2022 | 91.0°F | +1.5°F | 0.00 in |
| 2023 | 87.8°F | −1.7°F | 1.71 in |
| 2025 | 88.3°F | −1.2°F | 1.02 in |
| 2026 | 90.7°F | +1.2°F | 0.32 in |
Source: records: ACIS, NWS threaded record YUMthr; recent months: ACIS, station USW00003145. Records and recent months use complete months only.
How does September in Yuma compare across Arizona?
Across the 97 places PlainClimate covers in Arizona, September normal highs run from 70°F in Greer to 104°F in Tacna; Yuma's is 101°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.