Sunset on Cucamonga Peak north of Rancho Cucamonga

Weather · October

Rancho Cucamonga weather in October

Average highs of 83°F, lows of 57°F and 0.40 in of rain, from 30 years of weather records.

October is Rancho Cucamonga’s 5th warmest month, with average highs of 83°F and lows of 57°F. That is 9° cooler than September, and 3° above the yearly average high.

Average high
83°F
Average low
57°F
Precipitation
0.40 in
Wet days
2
Sunrise · sunset
6:55 AM · 6:16 PM

October across the year

  1. 68°45°Jan
  2. 68°46°Feb
  3. 72°49°Mar
  4. 76°51°Apr
  5. 80°56°May
  6. 86°60°Jun
  7. 94°65°Jul
  8. 95°65°Aug
  9. 91°64°Sep
  10. 83°57°Oct
  11. 75°49°Nov
  12. 67°44°Dec

High and low Rain

What to wear in October

  • Warm days: shorts and T-shirts, with a light layer for cooler evenings.

October is good for

What’s on in Rancho Cucamonga in October

See all upcoming events.

Around Rancho Cucamonga

Foothill Crossing Commercial Center, Rancho Cucamonga
Foothill Crossing Commercial CenterJordan W. · CC BY-SA 3.0
PacSun, Rancho Cucamonga
PacSunJordan W. · CC BY-SA 3.0
Chaffey library, Chaffey College, Rancho Cucamonga
Chaffey libraryUser:Plane777 · Public domain

See Rancho Cucamonga

A look around town before you go.

A recorded drive through Rancho Cucamonga video thumbnail

A DRIVE AROUND TOWN

A recorded drive through Rancho Cucamonga

A recorded drive through Rancho Cucamonga offers a street-level introduction to the city. This film is a dated journey, not live road conditions.

Watch on YouTube ↗
My vlog: Discovering a beautiful mountain road in Rancho Cucamonga😄👍 video thumbnail

THINGS TO DO · YOUTUBE SHORT

My vlog: Discovering a beautiful mountain road in Rancho Cucamonga😄👍

An activity Short shared by XiaomeiCheckIn.

Watch on YouTube ↗

October compared with the months around it

MonthHighLowRain
September91°F64°F0.10 in
October83°F57°F0.40 in
November75°F49°F0.80 in

Planning a trip? See the best time to visit Rancho Cucamonga and today’s forecast.

Questions

How hot does it get in Rancho Cucamonga in October?

Average highs are 83°F and average lows 57°F, for a daily mean of 70°F. Individual days run hotter or colder than these 30-year averages.

Does it rain in Rancho Cucamonga in October?

October averages 0.40 in of precipitation over about 2 days with at least 0.01 in. It is the 7th wettest month of the year.

What time is sunset in Rancho Cucamonga in October?

Around mid-October the sun rises about 6:55 AM and sets about 6:16 PM, for roughly 11.4 hours of daylight.

Is October a good time to visit Rancho Cucamonga?

Yes. October is one of the mildest months, with highs between 65°F and 85°F and little rain.

NOAA U.S. Climate Normals 1991–2020, Ontario Intl Ap station (3.5 mi from downtown). Sunrise and sunset are calculated for October 15 at the city’s coordinates.

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