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Rancho Cucamonga, California Weather

Rancho Cucamonga, California — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery, tide predictions, marine conditions and a solunar fishing forecast for Rancho Cucamonga, San Bernardino County.

🌡️ Current Conditions
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24-Hour Forecast
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Current Conditions Detail
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7-Day Forecast
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🌊 Marine & Fishing

Tides, marine forecast and fishing conditions near Rancho Cucamonga. Tide source:

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🎣 Best times to fish today (solunar)
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✈️ Aviation Weather

Flight conditions near Rancho Cucamonga. Data source: locating…

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🌿 Air Quality
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About Rancho Cucamonga, California

Rancho Cucamonga unfolds across a landscape shaped by the powerful presence of the San Gabriel Mountains, their rugged peaks forming a dramatic northern backdrop against the ceaseless blue of the California sky. It lies 3.2 miles east of Upland, CA (from Upland, CA: bearing 79°T), and is situated 9.1 miles west of Fontana. The city itself sprawls across a broad alluvial plain, a fertile expanse that has historically lent itself to agriculture and now supports a vibrant, modern community. Here, the air often carries a dry warmth, a whisper of the desert to the east, yet the proximity of the mountains offers a subtle coolness, particularly in the evenings when the light softens and paints the foothills in hues of rose and violet. This interplay of mountain shadow and valley sun defines the physical character of Rancho Cucamonga, a place where the vastness of the Inland Empire meets the intimate scale of neighborhood streets and tree-lined avenues. The history of Rancho Cucamonga is deeply rooted in the agricultural bounty of this fertile basin, a legacy that echoes in its very name, derived from a Spanish land grant. For generations, vineyards and citrus groves flourished here, their cultivation shaping the early economy and the identity of the region. While the agricultural past remains a cherished part of its heritage, Rancho Cucamonga has evolved into a dynamic economic hub. The city's economy today is diverse, driven by a robust retail sector, a significant presence in logistics and warehousing, and a growing number of businesses in technology and professional services. This economic transformation has brought a steady stream of residents and opportunities, creating a bustling environment that balances its historical roots with forward-looking development. Rancho Cucamonga's cultural landscape is a rich blend of community traditions and broader Californian influences, though it does not host professional teams in the NFL, NBA, MLB, NHL, or MLS. The city celebrates a number of annual events that draw residents together, reflecting a strong sense of local pride and shared experience. While not home to world-famous landmarks in the vein of distant metropolises, Rancho Cucamonga boasts its own points of local significance, including its extensive network of parks that offer vital green spaces for recreation and respite. The city is also recognized for its educational institutions, including campuses of renowned universities that attract students from across the region. Over time, Rancho Cucamonga has been the birthplace or adopted home of individuals who have achieved recognition in various fields, contributing to the broader narrative of Southern California's creative and intellectual output.

NWS Extended Forecast
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📡 Precipitation Radar

Live animated radar for Rancho Cucamonga and surroundings — RainViewer.

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🛰️ Satellite Imagery

NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.

NOAA GOES-16 CONUS GEOCOLOR satellite animated loop
🛰️ GEOCOLOR loop 🌡️ Infrared (IR) 🌀 NHC Hurricane Satellite 🔗 NOAA Full Viewer

Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload

🌙 Astronomy
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LocationRancho Cucamonga, San Bernardino County, California
Coordinates34.106399°N, 117.593108°W
TimezonePacific Time (America/Los_Angeles)
ZIP Code(s)91730, 91701, 91729, 91737, 91739
Area Code818, 747
Page generatedJuly 2026
Weather dataOpen-Meteo (open-source), NOAA National Weather Service

About This Rancho Cucamonga, California Weather Page

This page provides live weather conditions and forecasts for Rancho Cucamonga, California, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, real-time aviation weather (live METAR and TAF reports from the nearest reporting airport, with a modeled estimate shown when no station is in range), precipitation radar and NOAA GOES-16 satellite imagery. Additional sections may include tide predictions, wave height, wave direction and sea-surface temperature, a barometric pressure trend, and a solunar-based fishing forecast with a fishing-conditions rating for coastal localities, and soil temperature, crop weather and live USGS river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.

Location data for Rancho Cucamonga includes coordinates 34.106399°N, 117.593108°W, situated in San Bernardino County. ZIP code 91730, 91701, 91729, 91737, 91739. Telephone area code: 818, 747. Timezone: Pacific Time (America/Los_Angeles).

Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. Aviation data is sourced from aviationweather.gov (NOAA), with a modeled estimate used where no nearby reporting station is available. River and stream data is sourced from the USGS National Water Information System. Tide predictions are sourced from NOAA CO-OPS; marine and solunar data are modeled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-East and is public domain.