West Covina, CA weather in September
In September, West Covina sees highs around 83°F and lows around 64°F: warm and dry. Rain falls on about 1 day. It is one of the warmest months in West Covina.
- Normal high
- 83°F
- Normal low
- 64°F
- Wet days
- 1
- 0.2 in total
- Muggy days
- 2
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 85°F | 81°F |
| Normal low | 65°F | 63°F |
| Chance of a wet day | 2% | 5% |
| Sunrise / sunset | 6:25 am / 7:18 pm | 6:45 am / 6:37 pm |
| Daylight | 12.9 h | 11.9 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 September day
- 6 am65°Fdew point 60°F
- 9 am72°Fdew point 60°F
- Noon74°Fdew point 60°F
- 3 pm73°Fdew point 60°F
- 6 pm68°Fdew point 60°F
- 9 pm67°Fdew point 60°F
NOAA hourly normals (local standard time) from Los Angeles Intl Airport (27 mi away); average wind 7 mph; clear or few clouds in 87% of daytime hours, mostly cloudy or overcast in 11%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F7 of 30
- Hot dayshigh 90°F or more6 of 30
- Muggy daysdaily mean dew point 65°F or more2 of 30
- Wet daysat least 0.01 in of rain or melted snow1 of 30
- Notable rainat least 0.10 in1 of 30
- Freezing nightslow 32°F or below0 of 30
Average days per September, counted from daily records for each year 1991-2020.
Rain in September
Normal precipitation is 0.2 in; a dry September brings about 0.0 in and a wet one about 0.08 in (25th and 75th percentiles). Days with half an inch or more are rare.
How September varies from year to year
- Warmest September, 1991-20201997: average high 89°F
- Coolest September1999: average high 78°F
- Wettest September2015: 1.8 in
- Driest September1992: no measurable precipitation
- Highest reading113°F (September 27, 2010)
- Lowest reading55°F (September 23, 2007)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
September compared with August and October
| August | September | October | |
|---|---|---|---|
| Normal high | 84°F | 83°F | 79°F |
| Normal low | 65°F | 64°F | 60°F |
| Wet days | 0 | 1 | 3 |
| Comfortable days | 5 | 7 | 16 |
| Daylight | 13.4 h | 12.4 h | 11.3 h |
Highs change by -1°F from August and -4°F into October.
Nearby alternatives in September
- Warmer: Pomona, CA11 mi · high 91°F · 1 wet day
- Cooler: Torrance, CA28 mi · high 77°F · 1 wet day
How West Covina ranks in September
- Normal high164th warmest of 378 cities; 40th of 60 in California
- Wet days51st driest of 378
- Comfortable days182nd most of 342
Heating and cooling
September has 1 heating degree days and 259 cooling degree days (base 65°F), 11% of the year's total heating and cooling demand.
Questions
How hot is West Covina in September?
The normal high is 83°F and the normal low is 64°F. From 1991 to 2020 the hottest September reading was 113°F (September 27, 2010).
Does it rain a lot in West Covina in September?
About 1 days in September have at least 0.01 in of precipitation, and the normal total is 0.2 in. The wettest September in 1991-2020 was in 2015 (1.8 in); the driest was in 1992, with no measurable precipitation.
Is September a good time to visit West Covina?
September ranks 11th of 12 months on our comfort score for West Covina (59 out of 100). It has about 7 comfortable days and about 6 days at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature: Los Angeles Downtown Usc Campus (USW00093134), 17 mi W of the city center, 230 ft (155 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Rain: San Gabriel Canyon PH (USC00047776), 6.2 mi NNE of the city center, 744 ft (359 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Covina City Yard Fc387b (USC00042090), 3.7 mi ENE of the city center, 607 ft (222 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: San Gabriel Fire Dept (USC00047785), 9.3 mi W of the city center, 363 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Los Angeles Intl Airport (USW00023174), 27 mi WSW of the city center, 97 ft (288 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Cloud cover: Burbank Glendale Pasadena Airport (USW00023152), 26 mi WNW of the city center, 741 ft (356 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Long Beach / Daugherty Field / Airport (722970-23129), 21 mi SW of the city center, 33 ft (352 ft lower than the city). Hourly observations, 1991-2020.