Yorba Linda is located in the United States with varying weather patterns throughout the year. Plan your visit to Yorba Lindawith our accurate weather forecasts, including hourly updates, 7-day predictions, and real-time conditions. Whether you're a local or visitor, stay prepared for whatever weather the United States brings.
* WHAT...Temperatures of 85 to 92 today. High temperatures up to 89
Saturday. Low temperatures will be in the low 70s.
* WHERE...Orange County Coastal Areas.
* WHEN...Until 8 PM PDT Saturday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* ADDITIONAL DETAILS...Temperatures will fall to below normal by
Sunday.
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Orange County Coastal
Weather Forecast for Yorba Linda
40°/ 23°
Sunny
Updated now
Rain Chance
5%
Humidity
55%
Max Wind
21 km/h
Avg Temp
31°C
Sunrise
06:22 AM
Sunset
07:22 PM
Hourly Breakdown
Morning (6AM - 12PM)
29°C20%
06:00 am
24°
07:00 am
24°
08:00 am
27°
09:00 am
30°
10:00 am
32°
11:00 am
38°
Afternoon (12PM - 6PM)
39°C6%
12:00 pm
40°
01:00 pm
40°
02:00 pm
39°
03:00 pm
40°
04:00 pm
38°
05:00 pm
38°
Evening (6PM - 12AM)
31°C3%
06:00 pm
38°
07:00 pm
34°
08:00 pm
30°
09:00 pm
29°
10:00 pm
28°
11:00 pm
26°
Night (12AM - 6AM)
24°C27%
12:00 am
24°
01:00 am
24°
02:00 am
23°
03:00 am
23°
04:00 am
25°
05:00 am
24°
Hourly Forecast
Extended Forecast
Today
Sunny
5%
21 km/h
40°23°
Sat, 29 Aug
Smoky haze
UV Index
0 Low
Precipitation
0 mm
From: 2026/08/28, 18:46:00
Until: 2026/08/29, 05:15:00
Extreme Heat WarningSevere
* WHAT...Dangerously hot conditions today with temperatures of 95 to
100. Hot conditions continue into Saturday with highs up to 95. Low
temperatures will be in the low 70s.
* WHERE...Orange County Inland Areas.
* WHEN...Until 8 PM PDT Saturday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Temperatures will fall to below normal by
Sunday.
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
Orange County InlandFrom: 2026/08/28, 18:46:00Until: 2026/08/29, 05:15:00
Extreme Heat WarningSevere
* WHAT...Dangerously hot conditions with high temperatures today in
the mid 90s to 103 expected. Hot conditions will continue into
Saturday with highs up to 98 degrees. Low temperatures will be in
the low to mid-70s.
* WHERE...Santa Ana Mountains and Foothills.
* WHEN...Until 8 PM PDT Saturday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Temperatures will fall to below normal by
Sunday.
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
Santa Ana Mountains and FoothillsFrom: 2026/08/28, 18:46:00Until: 2026/08/29, 05:15:00
Extreme Heat WarningSevere
* WHAT...Dangerously hot conditions. Afternoon temperatures 104 to
113. Major Heat Risk.
* WHERE...Chuckwalla Mountains, Salton Sea, Chiriaco Summit, and
Joshua Tree NP East.
* WHEN...Until 8 PM PDT this evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
An Extreme Heat Warning means that a period of very hot temperatures,
even by local standards, will occur. Actions should be taken to
lessen the impact of the extreme heat.
Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose-fitting clothing when possible and
drink plenty of water.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Public cooling shelters are available in some areas. Consult county
officials for more details.
* WHAT...Dangerously hot conditions. Afternoon temperatures 104 to
113. Major Heat Risk.
* WHERE...Chuckwalla Mountains, Salton Sea, Chiriaco Summit, and
Joshua Tree NP East.
* WHEN...Until 8 PM PDT this evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
An Extreme Heat Warning means that a period of very hot temperatures,
even by local standards, will occur. Actions should be taken to
lessen the impact of the extreme heat.
Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose-fitting clothing when possible and
drink plenty of water.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Public cooling shelters are available in some areas. Consult county
officials for more details.