Rain forecast and rainfall this year
Rancho Cucamonga, CA
No rain expected today.
Updated Wednesday 3:06 PM ET.
Forecast
0 percent chance of rain
TodayHigh 72°, low 53°No rain expected
0 percent chance of rain
TomorrowHigh 75°, low 55°No rain expected
This year so far, since Jan 1
8.09 in
−0.97 in below normal for this point in the year (9.06 in).
National rank308th of 363
In California34th of 68
Biggest day0.87 in, Oct 22
Last measurable rain0.25 in, Nov 1, 2026
Month by month
Jan1.02
Feb2.94
Mar0.25
Apr0.64
May0.21
Jun0.00
Jul0.00
Aug0.00
Sep0.56
Oct2.22
Nov0.25
Dec–
This yearNormal
Nearby cities
- FontanaCA8.09 in this year6 miles
- OntarioCA8.09 in this year6 miles
- PomonaCA8.81 in this year12 miles
- San BernardinoCA6.11 in this year15 miles
- RiversideCA6.11 in this year16 miles
More Rancho Cucamonga weather
Forecast based on National Weather Service forecast data. Rainfall records are from NOAA Regional Climate Centers for the Ontario International Airport station, recorded since 1998; normals are NOAA’s 1991–2020 averages. Totals are preliminary. Rain Scoreboard is not affiliated with the National Weather Service or NOAA.