The San Marcos long range forecast indicates an extreme heatwave, with daytime highs soaring to 36°, well above the seasonal norm and 7.9 °C higher than the historical average.
Select a month and click on a day for more information:
Wednesday
Apr 1
22° / 12°
Thursday
Apr 2
19° / 9°
Friday
Apr 3
16° / 10°
Saturday
Apr 4
17° / 8°
Sunday
Apr 5
18° / 8°
Monday
Apr 6
22° / 10°
Tuesday
Apr 7
22° / 11°
Wednesday
Apr 8
23° / 12°
Thursday
Apr 9
23° / 12°
Friday
Apr 10
23° / 12°
Saturday
Apr 11
24° / 14°
Sunday
Apr 12
20° / 11°
Monday
Apr 13
17° / 10°
Tuesday
Apr 14
18° / 9°
Wednesday
Apr 15
19° / 9°
Thursday
Apr 16
20° / 11°
Friday
Apr 17
20° / 11°
Saturday
Apr 18
20° / 11°
Sunday
Apr 19
19° / 10°
Monday
Apr 20
21° / 11°
Tuesday
Apr 21
23° / 12°
Wednesday
Apr 22
21° / 12°
Thursday
Apr 23
20° / 11°
Friday
Apr 24
21° / 11°
Saturday
Apr 25
21° / 13°
Sunday
Apr 26
20° / 12°
Monday
Apr 27
22° / 11°
Tuesday
Apr 28
21° / 12°
Wednesday
Apr 29
23° / 11°
Thursday
Apr 30
23° / 12°
San Marcos 30 days weather forecast
Check out our estimated 30 days weather forecast for San Marcos, this data is based on the average weather in San Marcos in the last few years.
For a more accurate and detailed forecast, check out the 14 day weather for San Marcos next to the desired date.