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Today Hourly 7 days 30 days September
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September 2026 Weather | San Marcos, California

Tue 9/1
Cloudy Weather
Day 81°
Night 63°
2
Wed 9/2
Cloudy Weather
Day 82°
Night 63°
4
Thu 9/3
Cloudy Weather
Day 91°
Night 66°
5
Fri 9/4
Sunny Weather
Day 91°
Night 66°
5
Sat 9/5
Sunny Weather
Day 91°
Night 68°
1
Sun 9/6
Sunny Weather
Day 90°
Night 70°
2
Mon 9/7
Cloudy Weather
Day 88°
Night 68°
1
Tue 9/8
Cloudy Weather
Day 88°
Night 66°
0
Wed 9/9
Sunny Weather
Day 88°
Night 70°
1
Thu 9/10
Sunny Weather
Day 88°
Night 70°
1
Fri 9/11
Cloudy Weather
Day 88°
Night 64°
10
Sat 9/12
Cloudy Weather
Day 90°
Night 66°
10
Sun 9/13
Cloudy Weather
Day 90°
Night 66°
Mon 9/14
Cloudy Weather
Day 90°
Night 68°
0
Tue 9/15
Cloudy Weather
Day 90°
Night 66°
Wed 9/16
Cloudy Weather
Day 90°
Night 66°
Thu 9/17
Sunny Weather
Day 88°
Night 66°
Fri 9/18
Cloudy Weather
Day 86°
Night 63°
Sat 9/19
Cloudy Weather
Day 82°
Night 63°
Sun 9/20
Sunny Weather
Day 82°
Night 63°
Mon 9/21
Cloudy Weather
Day 84°
Night 63°
Tue 9/22
Sunny Weather
Day 86°
Night 64°
Wed 9/23
Sunny Weather
Day 86°
Night 63°
Thu 9/24
Cloudy Weather
Day 82°
Night 61°
Fri 9/25
Cloudy Weather
Day 79°
Night 57°
Sat 9/26
Rainy Weather
Day 79°
Night 57°
Sun 9/27
Cloudy Weather
Day 77°
Night 57°
Mon 9/28
Sunny Weather
Day 79°
Night 57°
Tue 9/29
Sunny Weather
Day 79°
Night 59°
Wed 9/30
Cloudy Weather
Day 79°
Night 61°

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