Napa weather in October: Napa, California: normal highs, lows, rain and records for October
Napa in October has a normal high of 75°F and a normal low of 46°F, a daily mean of 61°F, falling from 79°F on the 1st to 71°F by the 31st. Measurable precipitation falls on 3 days in a normal October, 0.93 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 24°C and low of 8°C, 24 mm of precipitation in October.
- NOAA stationNapa County Airport
- Station IDUSW00093227
- Location38.21°N 122.28°W
- Elevation14 ft (4 m)
- Population76,921
- Jan 57° 38°
- Feb 61° 40°
- Mar 64° 42°
- Apr 68° 44°
- May 73° 48°
- Jun 78° 52°
- Jul 79° 55°
- Aug 80° 54°
- Sep 80° 51°
- Oct 75° 46°
- Nov 65° 40°
- Dec 57° 38°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Napa in October?
The normal high is 75°F and the normal low 46°F, for a daily mean of 60.6°F. October is 5.1°F cooler than September and 7.9°F warmer than November. October is the 5th warmest month of the year in Napa and the 7th wettest. Across the month the normal high falls 8°F, from 79°F on October 1 to 71°F on October 31. From one year to the next October's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 59°F and 63°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 17%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 79°F | 49°F | 6% | 3% |
| October 8 | 78°F | 47°F | 8% | 5% |
| October 15 | 76°F | 46°F | 10% | 6% |
| October 22 | 74°F | 45°F | 13% | 8% |
| October 31 | 71°F | 43°F | 17% | 10% |
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 | 79°F | 49°F | 6% | 3% | 11 h 50 min |
| October 2 | 79°F | 49°F | 6% | 3% | 11 h 50 min |
| October 3 | 78°F | 48°F | 7% | 4% | 11 h 50 min |
| October 4 | 78°F | 48°F | 7% | 4% | 11 h 40 min |
| October 5 | 78°F | 48°F | 7% | 4% | 11 h 40 min |
| October 6 | 78°F | 48°F | 7% | 4% | 11 h 40 min |
| October 7 | 78°F | 48°F | 8% | 4% | 11 h 40 min |
| October 8 | 78°F | 47°F | 8% | 5% | 11 h 30 min |
| October 9 | 77°F | 47°F | 8% | 5% | 11 h 30 min |
| October 10 | 77°F | 47°F | 8% | 5% | 11 h 30 min |
| October 11 | 77°F | 47°F | 9% | 5% | 11 h 30 min |
| October 12 | 77°F | 47°F | 9% | 6% | 11 h 20 min |
| October 13 | 76°F | 47°F | 9% | 6% | 11 h 20 min |
| October 14 | 76°F | 46°F | 10% | 6% | 11 h 20 min |
| October 15 | 76°F | 46°F | 10% | 6% | 11 h 20 min |
| October 16 | 76°F | 46°F | 11% | 7% | 11 h 10 min |
| October 17 | 76°F | 46°F | 11% | 7% | 11 h 10 min |
| October 18 | 75°F | 46°F | 11% | 7% | 11 h 10 min |
| October 19 | 75°F | 45°F | 12% | 7% | 11 h 10 min |
| October 20 | 75°F | 45°F | 12% | 8% | 11 h |
| October 21 | 74°F | 45°F | 13% | 8% | 11 h |
| October 22 | 74°F | 45°F | 13% | 8% | 11 h |
| October 23 | 74°F | 45°F | 14% | 8% | 11 h |
| October 24 | 74°F | 44°F | 14% | 8% | 11 h |
| October 25 | 73°F | 44°F | 14% | 9% | 10 h 50 min |
| October 26 | 73°F | 44°F | 15% | 9% | 10 h 50 min |
| October 27 | 73°F | 44°F | 15% | 9% | 10 h 50 min |
| October 28 | 72°F | 44°F | 16% | 9% | 10 h 50 min |
| October 29 | 72°F | 43°F | 16% | 9% | 10 h 40 min |
| October 30 | 71°F | 43°F | 17% | 10% | 10 h 40 min |
| October 31 | 71°F | 43°F | 17% | 10% | 10 h 40 min |
- Normal high
- 75°FOctober average
- Normal low
- 46°FOctober average
- Precipitation
- 0.93 inmonth total
- Days with precipitation
- 30.01 inch or more
- Days at 90°F or more
- 2
- Daylight
- 11 h 50 min to 10 h 40 minOctober 1 to October 31
- Days at 70°F or more
- 23
- Days at 80°F or more
- 9
- Sunshine
- 88%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00093227; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Napa in October?
On a given October day the chance of 0.01 inch or more is 11% on average, highest around October 31 (17%). In all, 0.93 in falls on 3 days of a normal October.
In a normal October in Napa, 2 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00093227.
What are the records for October in Napa?
The warmest October temperature on this station's record (since 1998) is 101°F, on October 15, 2020; the coldest is 30°F, on October 31, 2002. The wettest October brought 6.73 in (2021).
The October mean against the 1991-2020 normal of 60.6°F: 2021 59.9°F (−0.7), 2022 60.8°F (+0.2), 2023 63.5°F (+2.9), 2024 63.9°F (+3.3), 2025 60.9°F (+0.3). 4 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 59.9°F | −0.7°F | 6.73 in |
| 2022 | 60.8°F | +0.2°F | 0.00 in |
| 2023 | 63.5°F | +2.9°F | 0.45 in |
| 2024 | 63.9°F | +3.3°F | 0.01 in |
| 2025 | 60.9°F | +0.3°F | 1.31 in |
Source: records: ACIS, station USW00093227; recent months: ACIS, station USW00093227. Records and recent months use complete months only.
How does October in Napa 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; Napa's is 75°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.