Rancho Cucamonga, California 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Clear 92°F 33°C Heat Index: 92°F	Observed at: Rancho Cucamonga, CA	Elevation: 1194 ft | 364 m
	Last Updated: July 29, 5:30 PM Timezone: GMT -5/-4
	Sky Conditions: Clear	Temperature: 92°F | 33°C
	Pressure: 28.54 in | 966.6 mb	Dewpoint: 60°F | 16°C
	Humidity: 34%	Wind: W 12 mph | W 19 kph
	Feels Like: 90°F | 32°C	Visibility: 123.1 mi | 198.2 km
	Lat/Long: 34.1064 | -117.5931	Sunrise: 5:59 AM   Sunset: 7:53 PM

7 Day Graphical Forecast

Valid: 5:33 PM 7/29/2026

Today Partly Cloudy 94 |63 °F 35 |17 °C 0% Chance Precipitation Thursday Foggy 98 |62 °F 37 |17 °C 0% Chance Precipitation Friday Overcast 101 |62 °F 38 |17 °C 0% Chance Precipitation Saturday Mostly Clear 103 |81 °F 40 |27 °C 0% Chance Precipitation Sunday Overcast 101 |81 °F 38 |27 °C 0% Chance Precipitation Monday Clear 100 |78 °F 38 |26 °C 0% Chance Precipitation Tuesday Clear 98 |78 °F 37 |26 °C 0% Chance Precipitation

7 Hour Graphical Forecast

Valid: 5:33 PM 7/29/2026

5 PM Clear 93 °F 0% Chance Precipitation

6 PM Clear 90 °F 0% Chance Precipitation

7 PM Clear 86 °F 0% Chance Precipitation

8 PM Clear 81 °F 0% Chance Precipitation

9 PM Clear 76 °F 0% Chance Precipitation

10 PM Clear 73 °F 0% Chance Precipitation

11 PM Clear 70 °F 0% Chance Precipitation

7 Day Textual Forecast - with QPF, Max Wind, Humidity, Snowfall & UV Index

7 Day & Night Weather Forecast for Rancho Cucamonga, CA - (Fahrenheit & Celsius) Valid: 5:33 PM 7/29/2026 Today Partly Cloudy with a high near 94°F [35°C]. W wind to around 12 mph [19 kph], with gusts to near 17 mph [27 kph]. Dewpoint near 60°F [16°C] with humidity of 93%. Pressure around 28.54 in [966.6 mb]. UV Index: 8.45. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Tonight Partly Cloudy with a low around 63°F [17°C]. W wind to around 12 mph [19 kph], with gusts to near 17 mph [27 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Thursday Foggy with a high near 98°F [37°C]. W wind to around 14 mph [23 kph], with gusts to near 20 mph [32 kph]. Dewpoint near 60°F [16°C] with humidity of 100%. Pressure around 28.54 in [966.6 mb]. UV Index: 8.45. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Thursday Night Foggy with a low around 62°F [17°C]. W wind to around 14 mph [23 kph], with gusts to near 20 mph [32 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Friday Overcast with a high near 101°F [38°C]. WSW wind to around 14 mph [22 kph], with gusts to near 13 mph [21 kph]. Dewpoint near 60°F [16°C] with humidity of 87%. Pressure around 28.54 in [966.6 mb]. UV Index: 8.4. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 62°F [17°C]. WSW wind to around 14 mph [22 kph], with gusts to near 13 mph [21 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Saturday Mostly Clear with a high near 103°F [40°C]. WSW wind to around 14 mph [22 kph], with gusts to near 13 mph [22 kph]. Dewpoint near 60°F [16°C] with humidity of 38%. Pressure around 28.54 in [966.6 mb]. UV Index: 8.45. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Saturday Night Mostly Clear with a low around 81°F [27°C]. WSW wind to around 14 mph [22 kph], with gusts to near 13 mph [22 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Sunday Overcast with a high near 101°F [38°C]. WSW wind to around 14 mph [22 kph], with gusts to near 13 mph [21 kph]. Dewpoint near 60°F [16°C] with humidity of 39%. Pressure around 28.54 in [966.6 mb]. UV Index: 8.45. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Sunday Night Overcast with a low around 81°F [27°C]. WSW wind to around 14 mph [22 kph], with gusts to near 13 mph [21 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Monday Clear with a high near 100°F [38°C]. WSW wind to around 14 mph [22 kph], with gusts to near 14 mph [22 kph]. Dewpoint near 60°F [16°C] with humidity of 47%. Pressure around 28.54 in [966.6 mb]. UV Index: 8.4. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Monday Night Clear with a low around 78°F [26°C]. WSW wind to around 14 mph [22 kph], with gusts to near 14 mph [22 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Tuesday Clear with a high near 98°F [37°C]. WSW wind to around 14 mph [22 kph], with gusts to near 13 mph [20 kph]. Dewpoint near 60°F [16°C] with humidity of 49%. Pressure around 28.54 in [966.6 mb]. UV Index: 8.35. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Tuesday Night Clear with a low around 78°F [26°C]. WSW wind to around 14 mph [22 kph], with gusts to near 13 mph [20 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Rancho Cucamonga, CA

Today: 0.0 mm | 0.00 in

Tonight: 0.0 mm | 0.00 in

Thursday: 0.0 mm | 0.00 in

Thursday Night: 0.0 mm | 0.00 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 0.0 mm | 0.00 in

Saturday Night: 0.0 mm | 0.00 in

Sunday: 0.0 mm | 0.00 in

Sunday Night: 0.0 mm | 0.00 in

Monday: 0.0 mm | 0.00 in

Monday Night: 0.0 mm | 0.00 in

Tuesday: 0.0 mm | 0.00 in

Tuesday Night: 0.0 mm | 0.00 in

7 Day and Night - Maximum Wind Speed Forecast for Rancho Cucamonga, CA

Today: W @ 19 kph | 12 mph

Tonight: W @ 19 kph | 12 mph

Thursday: W @ 23 kph | 14 mph

Thursday Night: W @ 23 kph | 14 mph

Friday: WSW @ 22 kph | 14 mph

Friday Night: WSW @ 22 kph | 14 mph

Saturday: WSW @ 22 kph | 14 mph

Saturday Night: WSW @ 22 kph | 14 mph

Sunday: WSW @ 22 kph | 14 mph

Sunday Night: WSW @ 22 kph | 14 mph

Monday: WSW @ 22 kph | 14 mph

Monday Night: WSW @ 22 kph | 14 mph

Tuesday: WSW @ 22 kph | 14 mph

Tuesday Night: WSW @ 22 kph | 14 mph

7 Day and Night - Maximum Humidity Forecast for Rancho Cucamonga, CA

Today: 93 %

Tonight: 93 %

Thursday: 100 %

Thursday Night: 100 %

Friday: 87 %

Friday Night: 87 %

Saturday: 38 %

Saturday Night: 38 %

Sunday: 39 %

Sunday Night: 39 %

Monday: 47 %

Monday Night: 47 %

Tuesday: 49 %

Tuesday Night: 49 %

7 Day and Night - Snowfall Totals Forecast for Rancho Cucamonga, CA

Today: 0.0 cm | 0.00 in

Tonight: 0.0 cm | 0.00 in

Thursday: 0.0 cm | 0.00 in

Thursday Night: 0.0 cm | 0.00 in

Friday: 0.0 cm | 0.00 in

Friday Night: 0.0 cm | 0.00 in

Saturday: 0.0 cm | 0.00 in

Saturday Night: 0.0 cm | 0.00 in

Sunday: 0.0 cm | 0.00 in

Sunday Night: 0.0 cm | 0.00 in

Monday: 0.0 cm | 0.00 in

Monday Night: 0.0 cm | 0.00 in

Tuesday: 0.0 cm | 0.00 in

Tuesday Night: 0.0 cm | 0.00 in

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