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Weather in Rancho Cucamonga, California for June 2026

Your guide to Rancho Cucamonga weather in June - trends and predictions

    Official Weather Alert ⚠️

  • Beach Hazards Statement - See hour by hour.

    • Temperatures

  • So far, June 2026 in Rancho Cucamonga shows a warmer trend than usual by 2.7 °F.

  • The forecast for the upcoming days in Rancho Cucamonga predicts a temperature of 32.6 °F, which is slightly above the historical average.

  • In general, the average temperature in Rancho Cucamonga at the beginning of June is 27.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 31.4 °F by the end of June.

    • Rain 🌧️

  • Precipitation in Rancho Cucamonga during June is a rare event, with an average of fewer than 2 rainy days.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
29
Dry days
Average rainy days
1
Rainy days
Average snowy days
0
Snow days
Average temperatures
29°/15°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
48 %
Avg humidity

Rancho Cucamonga Weather June

Move between months or click on a day
May
July
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
27°
2
Sunny
27°
3
Sunny
29°
4
Sunny
30°
5
Partly cloudy
28°
6
Sunny
27°
7
Sunny
27°
8
Sunny
28°
9
Partly cloudy
27°
10
Sunny
29°
11
Sunny
29°
12
Sunny
30°
13
Sunny
29°
14
Sunny
31°
15
Sunny
32°
16
Sunny
31°
17
Sunny
30°
18
Sunny
30°
19
Sunny
29°
20
Weather Alert Sunny
30°
21
Sunny
28°
22
Sunny
30°
23
Sunny
34°
24
Sunny
34°
25
Sunny
32°
26
Sunny
31°
27
Sunny
29°
28
Sunny
29°
29
Sunny
31°
30
Sunny
34°

Temperatures trend during June in Rancho Cucamonga

See the weather trend as well as the moving average line

June weather in Rancho Cucamonga day by day

Click on a date for more information
May July
Date Weather Temperatures Rain UV More
Jun. 1 Sunny
Sunny
 27° /15° 0.1 mm 8
Jun. 2 Sunny
Sunny
 27° /13° 0.1 mm 9
Jun. 3 Sunny
Sunny
 29° /13° 0 mm 9
Jun. 4 Sunny
Sunny
 30° /15° 0 mm 9
Jun. 5 Partly cloudy
Partly cloudy
 28° /15° 0 mm 8
Jun. 6 Sunny
Sunny
 27° /14° 0.2 mm 8
Jun. 7 Sunny
Sunny
 27° /14° 0.1 mm 8
Jun. 8 Sunny
Sunny
 28° /14° 0 mm 9
Jun. 9 Partly cloudy
Partly cloudy
 27° /14° 0 mm 9
Jun. 10 Sunny
Sunny
 29° /15° 0 mm 8
Jun. 11 Sunny
Sunny
 29° /16° 0.9 mm 8
Jun. 12 Sunny
Sunny
 30° /16° 0.6 mm 9
Jun. 13 Sunny
Sunny
 29° /15° 0 mm 9
Jun. 14 Sunny
Sunny
 31° /15° 0 mm 9
Jun. 15 Sunny
Sunny
 32° /18° 0.1 mm 9
Jun. 16 Sunny
Sunny
 31° /17° 0 mm 9
Jun. 17 Sunny
Sunny
 30° /15° 0 mm 9
Jun. 18 Sunny
Sunny
 30° /16° 0 mm 8
Jun. 19 Sunny
Sunny
 29° /15° 0 mm 8
Jun. 20 Sunny
Sunny
 30° /11° 0 mm 11.7
Jun. 21 Sunny
Sunny
 28° /13° 0 mm 12
Jun. 22 Sunny
Sunny
 30° /14° 0 mm 11.8
Jun. 23 Sunny
Sunny
 34° /16° 0 mm 11.8
Jun. 24 Sunny
Sunny
 34° /19° 0 mm 0
Jun. 25 Sunny
Sunny
 32° /18° 0 mm 6
Jun. 26 Sunny
Sunny
 31° /17° 0 mm 6
Jun. 27 Sunny
Sunny
 29° /16° 0 mm 6
Jun. 28 Sunny
Sunny
 29° /16° 0 mm 6
Jun. 29 Sunny
Sunny
 31° /15° 0 mm 6
Jun. 30 Sunny
Sunny
 34° /18° 0 mm 7
Next
Important Notice
Our weather forecast for Rancho Cucamonga in June is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Rancho Cucamonga forecast closer to your planned date for the most up-to-date weather information.
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Rancho Cucamonga in June - FAQ

What are the expected maximum and minimum temperatures in Rancho Cucamonga during June?

During June, expect a variety of temperatures with highs around 29° and lows near 15°, suitable for diverse activities and preferences.

How much rainfall should be expected in Rancho Cucamonga during June?

Rainfall in Rancho Cucamonga during June is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 1 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.

What are the typical wind conditions in Rancho Cucamonga during June?

The average wind speed in Rancho Cucamonga during June is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

UV exposure in Rancho Cucamonga during June

Stay informed about UV levels for safe outdoor activities throughout the month of June ☀️

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Location coordinates Where is Rancho Cucamonga?

Get accurate weather forecasts for Rancho Cucamonga, located at latitude 34.106 and longitude -117.593. Stay updated with localized weather information tailored for Rancho Cucamonga.

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