Pomona, CA weather in October
October in Pomona: warm and dry. Highs 83°F, lows 57°F, about 3 wet days. A good month for most outdoor plans.
- Normal high
- 83°F
- Normal low
- 57°F
- Wet days
- 3
- 1.1 in total
- Daylight
- 11.3 h
How October changes from start to finish
| October 1 | October 31 | |
|---|---|---|
| Normal high | 86°F | 80°F |
| Normal low | 61°F | 53°F |
| Chance of a wet day | 7% | 11% |
| Sunrise / sunset | 6:45 am / 6:35 pm | 7:09 am / 5:59 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 am58°Fdew point 46°F
- 9 am68°Fdew point 47°F
- Noon78°Fdew point 45°F
- 3 pm79°Fdew point 46°F
- 6 pm71°Fdew point 49°F
- 9 pm66°Fdew point 49°F
NOAA hourly normals (local standard time) from Burbank Glendale Pasadena Airport (36 mi away); average wind 4 mph; clear or few clouds in 81% of daytime hours, mostly cloudy or overcast in 16%.
What kind of days to expect
- Comfortable dayshigh 65-80°F (temperature only: no humidity station nearby)13 of 31
- Hot dayshigh 90°F or more8 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 1.1 in; a dry October brings about 0.03 in and a wet one about 1.7 in (25th and 75th percentiles). About 1 day brings half an inch or more.
How October varies from year to year
- Warmest October, 1991-20201999: average high 89°F
- Coolest October2000: average high 74°F
- Wettest October2004: 8.8 in
- Driest October1995: no measurable precipitation
- Highest reading107°F (October 1, 2012)
- Lowest reading41°F (October 31, 2019)
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 | 91°F | 83°F | 75°F |
| Normal low | 64°F | 57°F | 49°F |
| Wet days | 1 | 3 | 4 |
| Comfortable days | 4 | 13 | 18 |
| Daylight | 12.4 h | 11.3 h | 10.4 h |
Highs change by -8°F from September and -8°F into November.
Nearby alternatives in October
- Warmer: Palm Springs, CA71 mi · high 91°F · 1 wet day
- Cooler: Torrance, CA37 mi · high 74°F · 2 wet days
How Pomona ranks in October
- Normal high51st warmest of 378 cities; 12th of 60 in California
- Wet days52nd driest of 378
What to pack for Pomona in October
- Layers – afternoons near 83°F but nights near 57°F
Heating and cooling
October has 26 heating degree days and 177 cooling degree days (base 65°F), 6% of the year's total heating and cooling demand.
Questions
How hot is Pomona in October?
The normal high is 83°F and the normal low is 57°F. From 1991 to 2020 the hottest October reading was 107°F (October 1, 2012).
Does it rain a lot in Pomona in October?
About 3 days in October have at least 0.01 in of precipitation, and the normal total is 1.1 in. The wettest October in 1991-2020 was in 2004 (8.8 in); the driest was in 1995, with no measurable precipitation.
Is October a good time to visit Pomona?
October ranks 8th of 12 months on our comfort score for Pomona (61 out of 100). It has about 13 comfortable days (judged by temperature only) and about 8 days at 90°F or hotter. The best months are March, April and May.
Where the numbers come from
- Temperature: Ontario Intl Airport (USW00003102), 8.7 mi E of the city center, 949 ft (100 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Rain: San Gabriel Canyon PH (USC00047776), 11 mi NW of the city center, 744 ft (105 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Covina City Yard Fc387b (USC00042090), 7.7 mi WNW of the city center, 607 ft (242 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Pomona/Fairplex (USC00047050), 2.0 mi NNW of the city center, 999 ft (150 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Burbank Glendale Pasadena Airport (USW00023152), 36 mi WNW of the city center, 741 ft (108 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Not available for this location: daily humidity and wind (no station close enough or similar enough in elevation).