Rialto, CA · 2026
Sunrise and sunset in Rialto, California
Short answer
- Longest day
- 14 h 26 min
- Shortest day
- 9 h 53 min
Rialto daylight through 2026
Daylight in Rialto runs from 9 h 53 min on December 21 to 14 h 26 min on June 21, a seasonal swing of 4 h 33 min between June 21 and December 21. That swing ranks 206th of 342 US cities of 100,000+, where 1st is the largest. Around the March equinox the city gets 12 h 08 min, and around the September equinox 12 h 08 min.
Rialto daylight by month
| Month | Average | Sunrise | Sunset |
|---|---|---|---|
| January | 10 h 11 min | 6:47 AM to 6:55 AM | 4:51 PM to 5:19 PM |
| February | 10 h 59 min | 6:19 AM to 6:46 AM | 5:20 PM to 5:45 PM |
| March | 12 h 00 min | 6:10 AM to 7:09 AM | 5:46 PM to 7:09 PM |
| April | 13 h 04 min | 6:01 AM to 6:36 AM | 7:10 PM to 7:32 PM |
| May | 13 h 57 min | 5:39 AM to 6:00 AM | 7:33 PM to 7:55 PM |
| June | 14 h 24 min | 5:37 AM to 5:41 AM | 7:56 PM to 8:05 PM |
| July | 14 h 10 min | 5:41 AM to 6:00 AM | 7:51 PM to 8:05 PM |
| August | 13 h 23 min | 6:00 AM to 6:22 AM | 7:16 PM to 7:50 PM |
| September | 12 h 22 min | 6:23 AM to 6:43 AM | 6:34 PM to 7:15 PM |
| October | 11 h 19 min | 6:44 AM to 7:08 AM | 5:57 PM to 6:33 PM |
| November | 10 h 23 min | 6:09 AM to 6:36 AM | 4:40 PM to 4:56 PM |
| December | 9 h 55 min | 6:37 AM to 6:55 AM | 4:39 PM to 4:50 PM |
Earliest sunrise, latest sunset and the clock
The earliest sunrise comes on June 6 at 5:37 AM and the latest sunset on June 25 at 8:05 PM. The latest sunrise is 7:09 AM on March 8. Daylight saving time starts and ends on March 8 and November 1, which shifts every clock time by an hour.
On standard time the clocks run 8 hours behind UTC, the time of the 120° W meridian. Rialto sits at 117.39° W, so the sun runs about 10 minutes ahead of the zone clock. Solar noon is at 11:59 AM on January 15 and 12:55 PM on July 15.
Compared with nearby cities
Sacramento, the state capital, gets 26 minutes more daylight than Rialto on June 21 and 24 minutes less on December 21. Day length depends on latitude, so the table lists the paired cities from north to south.
| City | Latitude | June 21 | December 21 |
|---|---|---|---|
| North Las Vegas, NV | 36.29° N | 14 h 38 min | 9 h 41 min |
| Las Vegas, NV | 36.23° N | 14 h 38 min | 9 h 41 min |
| Henderson, NV | 36.01° N | 14 h 37 min | 9 h 43 min |
| Victorville, CA | 34.53° N | 14 h 28 min | 9 h 51 min |
| Hesperia, CA | 34.40° N | 14 h 27 min | 9 h 51 min |
| San Bernardino, CA | 34.14° N | 14 h 26 min | 9 h 53 min |
| Rancho Cucamonga, CA | 34.13° N | 14 h 26 min | 9 h 53 min |
| Rialto, CA | 34.12° N | 14 h 26 min | 9 h 53 min |
| Fontana, CA | 34.11° N | 14 h 26 min | 9 h 53 min |
| Ontario, CA | 34.04° N | 14 h 26 min | 9 h 53 min |
| Jurupa Valley, CA | 34.00° N | 14 h 25 min | 9 h 53 min |
| Riverside, CA | 33.94° N | 14 h 25 min | 9 h 54 min |
| Moreno Valley, CA | 33.92° N | 14 h 25 min | 9 h 54 min |
| Menifee, CA | 33.69° N | 14 h 24 min | 9 h 55 min |
Questions people ask
What is the longest day of the year in Rialto?
June 21, 2026, with 14 h 26 min of daylight: sunrise 5:38 AM, sunset 8:04 PM.
What is the shortest day in Rialto?
December 21, 2026, with 9 h 53 min: sunrise 6:51 AM, sunset 4:44 PM.
When is the latest sunset in Rialto?
8:05 PM on June 25, 2026. The earliest sunset is 4:39 PM on December 1.
What time zone is Rialto in?
America/Los_Angeles. Clocks change on March 8 (to PDT) and November 1 (to PST) in 2026.
Sources and data as of
Data as of: computed for 2026 at the Census internal point of Rialto, 34.117° N, 117.389° W; time zone from Open-Meteo.
- 01SunCalc library (Vladimir Agafonkin), algorithms after Jean Meeus
- 02IANA time zone database (clock times and daylight saving rules)
How every number is computed: methodology. Spotted a wrong figure? Report an error.