Davis weather in September: Davis, California: normal highs, lows, rain and records for September
Davis in September has a normal high of 90°F and a normal low of 55°F, a daily mean of 72°F, falling from 92°F on the 1st to 86°F by the 30th. Measurable precipitation falls on 1 days in a normal September, 0.09 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 32°C and low of 13°C, 2 mm of precipitation in September.
- NOAA stationDavis 2 WSW Experiment Farm
- Station IDUSC00042294
- Location38.53°N 121.78°W
- Elevation60 ft (18 m)
- Population67,125
- Jan 56° 38°
- Feb 61° 41°
- Mar 66° 44°
- Apr 73° 47°
- May 81° 52°
- Jun 89° 56°
- Jul 93° 57°
- Aug 93° 56°
- Sep 90° 55°
- Oct 80° 50°
- Nov 65° 43°
- Dec 56° 38°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Davis in September?
The normal high is 90°F and the normal low 55°F, for a daily mean of 72.3°F. September is 2.3°F cooler than August and 7.6°F warmer than October. September is the 3rd warmest month of the year in Davis and the 10th wettest. Across the month the normal high falls 6°F, from 92°F on September 1 to 86°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 71°F and 74°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 | 92°F | 56°F | 1% | 1% |
| September 8 | 91°F | 56°F | 2% | 1% |
| September 15 | 90°F | 55°F | 3% | 1% |
| September 22 | 89°F | 54°F | 4% | 2% |
| September 30 | 86°F | 53°F | 6% | 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 | 92°F | 56°F | 1% | 1% | 13 h |
| September 2 | 92°F | 56°F | 1% | 1% | 13 h |
| September 3 | 92°F | 56°F | 1% | 1% | 13 h |
| September 4 | 92°F | 56°F | 1% | 1% | 13 h |
| September 5 | 92°F | 56°F | 2% | 1% | 12 h 50 min |
| September 6 | 92°F | 56°F | 2% | 1% | 12 h 50 min |
| September 7 | 91°F | 56°F | 2% | 1% | 12 h 50 min |
| September 8 | 91°F | 56°F | 2% | 1% | 12 h 50 min |
| September 9 | 91°F | 56°F | 2% | 1% | 12 h 40 min |
| September 10 | 91°F | 55°F | 2% | 1% | 12 h 40 min |
| September 11 | 91°F | 55°F | 2% | 1% | 12 h 40 min |
| September 12 | 91°F | 55°F | 2% | 1% | 12 h 40 min |
| September 13 | 91°F | 55°F | 3% | 1% | 12 h 30 min |
| September 14 | 90°F | 55°F | 3% | 1% | 12 h 30 min |
| September 15 | 90°F | 55°F | 3% | 1% | 12 h 30 min |
| September 16 | 90°F | 55°F | 3% | 1% | 12 h 30 min |
| September 17 | 90°F | 55°F | 3% | 1% | 12 h 20 min |
| September 18 | 90°F | 55°F | 3% | 1% | 12 h 20 min |
| September 19 | 89°F | 55°F | 4% | 1% | 12 h 20 min |
| September 20 | 89°F | 55°F | 4% | 1% | 12 h 20 min |
| September 21 | 89°F | 54°F | 4% | 1% | 12 h 20 min |
| September 22 | 89°F | 54°F | 4% | 2% | 12 h 10 min |
| September 23 | 88°F | 54°F | 4% | 2% | 12 h 10 min |
| September 24 | 88°F | 54°F | 4% | 2% | 12 h 10 min |
| September 25 | 88°F | 54°F | 5% | 2% | 12 h 10 min |
| September 26 | 88°F | 54°F | 5% | 2% | 12 h |
| September 27 | 87°F | 54°F | 5% | 2% | 12 h |
| September 28 | 87°F | 53°F | 5% | 2% | 12 h |
| September 29 | 87°F | 53°F | 5% | 2% | 12 h |
| September 30 | 86°F | 53°F | 6% | 2% | 11 h 50 min |
- Normal high
- 90°FSeptember average
- Normal low
- 55°FSeptember average
- Precipitation
- 0.09 inmonth total
- Days with precipitation
- 10.01 inch or more
- Days at 90°F or more
- 17
- Daylight
- 13 h to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 30
- Days at 80°F or more
- 27
- Sunshine
- 96%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00042294; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Davis in September?
On a given September day the chance of 0.01 inch or more is 3% on average, highest around September 30 (6%). In all, 0.09 in falls on 1 days of a normal September.
In a normal September in Davis, 17 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00042294.
What are the records for September in Davis?
The warmest September temperature on this station's record (since 1893) is 116°F, on September 7, 2022; the coldest is 35°F, on September 14, 1910. The wettest September brought 4.07 in (1918).
The September mean against the 1991-2020 normal of 72.3°F: 2021 76.7°F (+4.4), 2022 76.7°F (+4.4), 2023 71.3°F (−1.0), 2024 74.8°F (+2.5), 2025 79.3°F (+7.0), 2026 71.9°F (−0.4). 4 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 76.7°F | +4.4°F | 0.02 in |
| 2022 | 76.7°F | +4.4°F | 2.86 in |
| 2023 | 71.3°F | −1.0°F | 0.02 in |
| 2024 | 74.8°F | +2.5°F | 0.00 in |
| 2025 | 79.3°F | +7.0°F | 0.00 in |
| 2026 | 71.9°F | −0.4°F | 0.00 in |
Source: records: ACIS, station USC00042294; recent months: ACIS, station USC00042294. Records and recent months use complete months only.
How does September in Davis compare across California?
Across the 219 places PlainClimate covers in California, September normal highs run from 64°F in Eureka to 104°F in Brawley; Davis's is 90°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.