San Bernardino, CA weather in October
In October, San Bernardino sees highs around 83°F and lows around 53°F: warm and dry. Expect about 3 wet days.
- Normal high
- 83°F
- Normal low
- 53°F
- Wet days
- 3
- 0.5 in total
- Muggy days
- 0
- dew point 65°F+
How October changes from start to finish
| October 1 | October 31 | |
|---|---|---|
| Normal high | 87°F | 80°F |
| Normal low | 56°F | 49°F |
| Chance of a wet day | 6% | 10% |
| Sunrise / sunset | 6:43 am / 6:33 pm | 7:07 am / 5:57 pm |
| Daylight | 11.8 h | 10.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
A typical October day
- 6 am53°Fdew point 44°F
- 9 am68°Fdew point 45°F
- Noon80°Fdew point 40°F
- 3 pm80°Fdew point 41°F
- 6 pm69°Fdew point 45°F
- 9 pm62°Fdew point 47°F
NOAA hourly normals (local standard time) from March AFB (15 mi away); average wind 5 mph; clear or few clouds in 72% of daytime hours, mostly cloudy or overcast in 21%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F12 of 31
- Hot dayshigh 90°F or more9 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow3 of 31
- Notable rainat least 0.10 in1 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per October, counted from daily records for each year 1991-2020.
Rain in October
Normal precipitation is 0.5 in; a dry October brings about 0.0 in and a wet one about 0.6 in (25th and 75th percentiles). Days with half an inch or more are rare.
How October varies from year to year
- Warmest October, 1991-20201999: average high 90°F
- Coolest October2000: average high 75°F
- Wettest October2004: 6.2 in
- Driest October1995: no measurable precipitation
- Highest reading107°F (October 1, 2012)
- Lowest reading39°F (October 31, 1991)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
October compared with September and November
| September | October | November | |
|---|---|---|---|
| Normal high | 92°F | 83°F | 75°F |
| Normal low | 60°F | 53°F | 45°F |
| Wet days | 1 | 3 | 4 |
| Comfortable days | 4 | 12 | 16 |
| Daylight | 12.4 h | 11.3 h | 10.4 h |
Highs change by -9°F from September and -8°F into November.
Nearby alternatives in October
- Warmer: Palm Springs, CA47 mi · high 91°F · 1 wet day
- Cooler: Big Bear Lake, CA24 mi · high 63°F · 2 wet days
How San Bernardino ranks in October
- Normal high46th warmest of 378 cities; 8th of 60 in California
- Wet days48th driest of 378
- Comfortable days166th most of 340
What to pack for San Bernardino in October
- Layers – afternoons near 83°F but nights near 53°F
Heating and cooling
October has 41 heating degree days and 131 cooling degree days (base 65°F), 5% of the year's total heating and cooling demand.
Questions
How hot is San Bernardino in October?
The normal high is 83°F and the normal low is 53°F. From 1991 to 2020 the hottest October reading was 107°F (October 1, 2012).
Does it rain a lot in San Bernardino in October?
About 3 days in October have at least 0.01 in of precipitation, and the normal total is 0.5 in. The wettest October in 1991-2020 was in 2004 (6.2 in); the driest was in 1995, with no measurable precipitation.
Is October a good time to visit San Bernardino?
October ranks 8th of 12 months on our comfort score for San Bernardino (59 out of 100). It has about 12 comfortable days and about 9 days at 90°F or hotter. The best months are March, April and May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth and frost dates: Redlands (USC00047306), 7.3 mi SE of the city center, 1,410 ft (359 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: March AFB (USW00023119), 15 mi S of the city center, 1,516 ft (465 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: March Air Reserve Base (722860-23119), 15 mi S of the city center, 1,536 ft (485 ft higher than the city). Hourly observations, 1991-2020.