Irvine, CA weather in October
In October, Irvine sees highs around 79°F and lows around 59°F: mild and dry. Rain falls on about 2 days. Good for outdoor plans.
- Normal high
- 79°F
- Normal low
- 59°F
- Wet days
- 2
- 0.5 in total
- Muggy days
- 0
- dew point 65°F+
How October changes from start to finish
| October 1 | October 31 | |
|---|---|---|
| Normal high | 81°F | 78°F |
| Normal low | 62°F | 57°F |
| Chance of a wet day | 4% | 8% |
| Sunrise / sunset | 6:45 am / 6:36 pm | 7:09 am / 6:00 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 am62°Fdew point 53°F
- 9 am69°Fdew point 53°F
- Noon72°Fdew point 54°F
- 3 pm70°Fdew point 55°F
- 6 pm66°Fdew point 57°F
- 9 pm65°Fdew point 56°F
NOAA hourly normals (local standard time) from Los Angeles Intl Airport (37 mi away); average wind 7 mph; clear or few clouds in 50% of daytime hours, mostly cloudy or overcast in 29%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F14 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph14 of 31
- Hot dayshigh 90°F or more5 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow2 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 0.01 in and a wet one about 0.7 in (25th and 75th percentiles). Days with half an inch or more are rare.
How October varies from year to year
- Warmest October, 1991-20202008: average high 86°F
- Coolest October2002: average high 74°F
- Wettest October2004: 4.8 in
- Driest October1995: no measurable precipitation
- Highest reading106°F (October 9, 2015)
- Lowest reading45°F (October 25, 1997)
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 | 84°F | 79°F | 74°F |
| Normal low | 64°F | 59°F | 53°F |
| Wet days | 1 | 2 | 3 |
| Comfortable days | 6 | 14 | 20 |
| Daylight | 12.4 h | 11.3 h | 10.4 h |
Highs change by -5°F from September and -5°F into November.
Nearby alternatives in October
- Warmer: Corona, CA20 mi · high 85°F · 1 wet day
- Cooler: Torrance, CA32 mi · high 74°F · 2 wet days
How Irvine ranks in October
- Normal high99th warmest of 378 cities; 26th of 60 in California
- Wet days20th driest of 378
- Comfortable days110th most of 340
What to pack for Irvine in October
- A swimsuit – about 14 beach days
Heating and cooling
October has 12 heating degree days and 148 cooling degree days (base 65°F), 7% of the year's total heating and cooling demand.
Questions
How hot is Irvine in October?
The normal high is 79°F and the normal low is 59°F. From 1991 to 2020 the hottest October reading was 106°F (October 9, 2015).
Does it rain a lot in Irvine in October?
About 2 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 (4.9 in); the driest was in 1995, with no measurable precipitation.
Is October a good time to visit Irvine?
October ranks 9th of 12 months on our comfort score for Irvine (65 out of 100). It has about 14 comfortable days and about 5 days at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall and snow depth: Santa Ana Fire Stn (USC00047888), 5.7 mi NNW of the city center, 135 ft (81 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Santa Ana John Wayne Airport (USW00093184), 2.6 mi WNW of the city center, 54 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Los Angeles Intl Airport (USW00023174), 37 mi WNW of the city center, 97 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: J. Wayne Apt-Orange Co Apt (722977-93184), 2.6 mi WNW of the city center, 43 ft . Hourly observations, 1991-2020.