Fairfield weather in October: Fairfield, California: normal highs, lows, rain and records for October
Fairfield in October has a normal high of 78°F and a normal low of 52°F, a daily mean of 65°F, falling from 84°F on the 1st to 72°F by the 31st. Measurable precipitation falls on 3 days in a normal October, 1.11 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 26°C and low of 11°C, 28 mm of precipitation in October.
- NOAA stationFairfield
- Station IDUSC00042934
- Location38.27°N 122.07°W
- Elevation40 ft (12 m)
- Population122,646
- Jan 57° 40°
- Feb 62° 43°
- Mar 66° 45°
- Apr 71° 48°
- May 78° 52°
- Jun 85° 56°
- Jul 90° 58°
- Aug 89° 58°
- Sep 87° 57°
- Oct 78° 52°
- Nov 66° 45°
- Dec 57° 40°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Fairfield in October?
The normal high is 78°F and the normal low 52°F, for a daily mean of 65.2°F. October is 6.5°F cooler than September and 9.8°F warmer than November. October is the 5th warmest month of the year in Fairfield and the 7th wettest. Across the month the normal high falls 12°F, from 84°F on October 1 to 72°F on October 31. From one year to the next October's mean temperature typically moves about 2.3°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 63°F and 68°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 14%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 84°F | 55°F | 5% | 3% |
| October 8 | 81°F | 54°F | 7% | 4% |
| October 15 | 79°F | 53°F | 9% | 6% |
| October 22 | 76°F | 51°F | 11% | 8% |
| October 31 | 72°F | 49°F | 14% | 11% |
Every day of October: normal high, low and chance of precipitation (warmest afternoon October 1, coldest night October 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| October 1 | 84°F | 55°F | 5% | 3% | 11 h 50 min |
| October 2 | 83°F | 55°F | 5% | 3% | 11 h 50 min |
| October 3 | 83°F | 55°F | 6% | 3% | 11 h 50 min |
| October 4 | 83°F | 55°F | 6% | 4% | 11 h 40 min |
| October 5 | 82°F | 54°F | 6% | 4% | 11 h 40 min |
| October 6 | 82°F | 54°F | 6% | 4% | 11 h 40 min |
| October 7 | 82°F | 54°F | 6% | 4% | 11 h 40 min |
| October 8 | 81°F | 54°F | 7% | 4% | 11 h 30 min |
| October 9 | 81°F | 54°F | 7% | 5% | 11 h 30 min |
| October 10 | 81°F | 54°F | 7% | 5% | 11 h 30 min |
| October 11 | 80°F | 53°F | 7% | 5% | 11 h 30 min |
| October 12 | 80°F | 53°F | 8% | 5% | 11 h 20 min |
| October 13 | 80°F | 53°F | 8% | 5% | 11 h 20 min |
| October 14 | 79°F | 53°F | 8% | 6% | 11 h 20 min |
| October 15 | 79°F | 53°F | 9% | 6% | 11 h 20 min |
| October 16 | 78°F | 53°F | 9% | 6% | 11 h 10 min |
| October 17 | 78°F | 52°F | 9% | 7% | 11 h 10 min |
| October 18 | 78°F | 52°F | 9% | 7% | 11 h 10 min |
| October 19 | 77°F | 52°F | 10% | 7% | 11 h 10 min |
| October 20 | 77°F | 52°F | 10% | 7% | 11 h |
| October 21 | 77°F | 51°F | 10% | 8% | 11 h |
| October 22 | 76°F | 51°F | 11% | 8% | 11 h |
| October 23 | 76°F | 51°F | 11% | 8% | 11 h |
| October 24 | 75°F | 51°F | 12% | 8% | 10 h 50 min |
| October 25 | 75°F | 51°F | 12% | 9% | 10 h 50 min |
| October 26 | 74°F | 50°F | 12% | 9% | 10 h 50 min |
| October 27 | 74°F | 50°F | 13% | 9% | 10 h 50 min |
| October 28 | 74°F | 50°F | 13% | 10% | 10 h 50 min |
| October 29 | 73°F | 50°F | 14% | 10% | 10 h 40 min |
| October 30 | 73°F | 49°F | 14% | 10% | 10 h 40 min |
| October 31 | 72°F | 49°F | 14% | 11% | 10 h 40 min |
- Normal high
- 78°FOctober average
- Normal low
- 52°FOctober average
- Precipitation
- 1.11 inmonth total
- Days with precipitation
- 30.01 inch or more
- Days at 90°F or more
- 3
- Daylight
- 11 h 50 min to 10 h 40 minOctober 1 to October 31
- Days at 70°F or more
- 26
- Days at 80°F or more
- 14
- Sunshine
- 88%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00042934; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Fairfield in October?
On a given October day the chance of 0.01 inch or more is 9% on average, highest around October 31 (14%). In all, 1.11 in falls on 3 days of a normal October.
In a normal October in Fairfield, 3 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00042934.
What are the records for October in Fairfield?
The warmest October temperature on this station's record (since 1950) is 102°F, on October 5, 1980; the coldest is 32°F, on October 6, 2011. The wettest October brought 8.45 in (2021).
The October mean against the 1991-2020 normal of 65.2°F: 2021 63.2°F (−2.0), 2022 66.6°F (+1.4), 2023 66.9°F (+1.7), 2024 69.8°F (+4.5), 2025 64.3°F (−0.9). 3 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 63.2°F | −2.0°F | 8.45 in |
| 2022 | 66.6°F | +1.4°F | 0.00 in |
| 2023 | 66.9°F | +1.7°F | 0.51 in |
| 2024 | 69.8°F | +4.5°F | 0.11 in |
| 2025 | 64.3°F | −0.9°F | 1.90 in |
Source: records: ACIS, station USC00042934; recent months: ACIS, station USC00042934. Records and recent months use complete months only.
How does October in Fairfield compare across California?
Across the 219 places PlainClimate covers in California, October normal highs run from 58°F in Tahoma to 93°F in Brawley; Fairfield's is 78°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Fairfield in September87°F by day, 57°F at night
- Fairfield in November66°F by day, 45°F at night
- Fairfield through the yearEvery month, frost dates, records and recent years
- California in OctoberThe statewide normal and the warmest and coolest places
- Brawley: California's warmest Octobernormal high 93°F