Riverside County Weather Forecast
Riverside County weather: 74°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Summary
Riverside County is a county in California. Riverside County is a county in the United States. It has a population of about 2.5 million.
Right now it is 74°F (23°C) in Riverside County with clear. It feels like 76°F. Today runs from 71°F to 104°F. Chance of precipitation is 1%. Sightseeing conditions score 9.8/10 - excellent - go now.
The best time to visit Riverside County is April, May, June, July, August, September and October. The climate is Mediterranean. January, February and December tend to be the least comfortable months. August is the warmest month with average highs near 96°F, while January is the coldest with lows near 45°F.
The closest major airport is Los Angeles International Airport (LAX), about 58 mi away. Nearby highlights include Disneyland Resort, Hollywood Sign, Santa Monica State Beach and Anza-Borrego Desert State Park.
In plain terms. Today is warmer than average for August. The forecast high of 104°F is 7.6°F above the 96°F typical for this month. The best window to be outside is roughly 7 AM to 10 AM, when temperature, rain chance and wind line up best. stargazing is the strongest bet in Riverside County today at 10/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Active alerts for Riverside County
Heat Advisory issued August 22 at 2:56AM PDT until August 24 at 8:00PM PDT by NWS San Diego CA
Issued by NWS San Diego CA
Weather in Riverside County right now
Source: Open-Meteo. Updated 12:27 PM, Aug 22 local time.
See the Riverside County forecast by time range
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
16-day forecast for Riverside County
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Sat, Aug 22 | ☀️ Clear sky | 104° / 71° | 1% | 14 mph | 8 |
| Sun, Aug 23 | ☁️ Overcast | 105° / 70° | 0% | 14 mph | 8 |
| Mon, Aug 24 | ☁️ Overcast | 104° / 84° | 1% | 14 mph | 8 |
| Tue, Aug 25 | ☁️ Overcast | 105° / 83° | 1% | 13 mph | 8 |
| Wed, Aug 26 | ☀️ Clear sky | 106° / 87° | 0% | 14 mph | 8 |
| Thu, Aug 27 | ☀️ Clear sky | 105° / 85° | 0% | 12 mph | 8 |
| Fri, Aug 28 | 🌤️ Mainly clear | 105° / 85° | 1% | 12 mph | 8 |
| Sat, Aug 29 | 🌤️ Mainly clear | 106° / 86° | 1% | 13 mph | 8 |
| Sun, Aug 30 | ☀️ Clear sky | 105° / 86° | 1% | 14 mph | 8 |
| Mon, Aug 31 | ⛅ Partly cloudy | 102° / 85° | 2% | 14 mph | 8 |
| Tue, Sep 1 | 🌤️ Mainly clear | 104° / 83° | 1% | 14 mph | 8 |
| Wed, Sep 2 | ☀️ Clear sky | 102° / 82° | 6% | 16 mph | 8 |
| Thu, Sep 3 | ☁️ Overcast | 101° / 85° | 6% | 13 mph | 8 |
| Fri, Sep 4 | ☀️ Clear sky | 101° / 83° | 13% | 12 mph | 8 |
| Sat, Sep 5 | ☀️ Clear sky | 101° / 83° | 10% | 10 mph | 8 |
| Sun, Sep 6 | ☀️ Clear sky | -- / -- | 14% | -- | — |
Climate in Riverside County month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 67° | 45° | 1,8 in | ★★★★☆ |
| February | 68° | 47° | 4,5 in | ★★★☆☆ |
| March | 73° | 50° | 2,3 in | ★★★★☆ |
| April | 75° | 52° | 0,8 in | ★★★★★ |
| May | 81° | 56° | 0,2 in | ★★★★★ |
| June | 89° | 61° | 0,0 in | ★★★★★ |
| July | 95° | 66° | 0,1 in | ★★★★★ |
| August | 96° | 67° | 0,5 in | ★★★★★ |
| September | 90° | 64° | 0,9 in | ★★★★★ |
| October | 85° | 57° | 0,6 in | ★★★★★ |
| November | 73° | 49° | 2,2 in | ★★★★☆ |
| December | 70° | 46° | 1,5 in | ★★★★☆ |
Climate type: Mediterranean. Source: Open-Meteo archive (ERA5).
Weather map for Riverside County
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Air quality and pollen in Riverside County
Air quality: Open-Meteo (CAMS). US AQI scale.
Sun, twilight and moon
Golden and blue hour are the standard photographic approximation around sunrise and sunset.
Best time to visit Riverside County
Go in April, May, June, July, August, September and October. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and December - expect the least comfortable mix of heat, cold or rain.
Explore Riverside County
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Riverside County?
Riverside County is a county in California. Its coordinates are 33.9533, -117.3961. It lies in North America.
What is the weather like in Riverside County right now?
It is currently 74°F (23°C) with clear. Humidity is 60% and wind is 2 mph.
When is the best time to visit Riverside County?
April, May, June, July, August, September and October offer the most comfortable conditions in Riverside County, which has a Mediterranean climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is Riverside County in?
Riverside County observes America/Los_Angeles (UTC-07:00). The local time is 12:27 PM.
How many people live in Riverside County?
Riverside County has a population of approximately 2.5 million.
What is the nearest airport to Riverside County?
The closest airports are Los Angeles International Airport (LAX), 58 mi away, San Diego International Airport (SAN), 85 mi away and Harry Reid International Airport (LAS), 194 mi away.
What are the top things to do in Riverside County?
Popular options include Disneyland Resort, Hollywood Sign, Santa Monica State Beach, Anza-Borrego Desert State Park, Joshua Tree National Park and Coronado Beach.
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| Place data | USPOTUS Atlas dataset (us-counties) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 22, 2026 at 12:27 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
