Forecast
San Marcos, CA
Will it rain tomorrow

Will it rain tomorrow in San Marcos, CA

Updated September 25 · Live conditions refresh automatically.

Umbrella

No need

No need for an umbrella during the day.

Tomorrow24 hours

MustNeedLikely neededLikely no needNo need

No need

Hourly rain conditions

Loading hourly rain details… Chance is shown in percent; rain amount in inches; wind in mph; humidity and cloud cover in percentages.

Peak 0%Total 0 in

Precip (%)

Rain (in)

Hour	Chance	Clouds	Wind	Temp	Feels	Humidity
Clear	0%	11%	1 mph G3	66°	68°	93%
Clear	0%	14%	1 mph G3	66°	68°	96%
Mostly clear	0%	22%	1 mph G3	65°	67°	100%
Partly cloudy	0%	39%	1 mph G3	65°	68°	100%
Partly cloudy	0%	52%	1 mph G3	65°	68°	100%
Mostly cloudy	0%	62%	1 mph G3	65°	68°	100%
Mostly cloudy	0%	70%	1 mph G4	65°	68°	97%
Mostly cloudy	0%	68%	2 mph G4	65°	68°	97%
Partly sunny	0%	58%	2 mph G4	68°	76°	93%
Partly sunny	0%	40%	2 mph G5	73°	85°	79%
Mostly sunny	0%	22%	3 mph G6	77°	90°	71%
Sunny	0%	9%	4 mph G9	81°	92°	62%
Sunny	0%	8%	6 mph G11	82°	92°	60%
Sunny	0%	7%	7 mph G13	83°	92°	59%
Sunny	0%	7%	7 mph G14	84°	93°	57%
Sunny	0%	6%	7 mph G14	83°	92°	55%
Sunny	0%	5%	6 mph G13	84°	92°	51%
Sunny	0%	5%	5 mph G11	82°	89°	55%
Sunny	0%	5%	6 mph G13	79°	79°	60%
Clear	0%	5%	4 mph G9	75°	75°	69%
Clear	0%	6%	3 mph G7	72°	72°	78%
Clear	0%	9%	2 mph G6	73°	73°	77%
Mostly clear	0%	12%	2 mph G5	71°	72°	80%
Mostly clear	0%	12%	2 mph G5	70°	71°	83%

Clear

Chance 0%Clouds 11%

Rain0 in

Wind1 mph G3

Temp66°

Feels68°

Humidity93%

Clear

Chance 0%Clouds 14%

Rain0 in

Wind1 mph G3

Temp66°

Feels68°

Humidity96%

Mostly clear

Chance 0%Clouds 22%

Rain0 in

Wind1 mph G3

Temp65°

Feels67°

Humidity100%

Partly cloudy

Chance 0%Clouds 39%

Rain0 in

Wind1 mph G3

Temp65°

Feels68°

Humidity100%

Partly cloudy

Chance 0%Clouds 52%

Rain0 in

Wind1 mph G3

Temp65°

Feels68°

Humidity100%

Mostly cloudy

Chance 0%Clouds 62%

Rain0 in

Wind1 mph G3

Temp65°

Feels68°

Humidity100%

Mostly cloudy

Chance 0%Clouds 70%

Rain0 in

Wind1 mph G4

Temp65°

Feels68°

Humidity97%

Mostly cloudy

Chance 0%Clouds 68%

Rain0 in

Wind2 mph G4

Temp65°

Feels68°

Humidity97%

Partly sunny

Chance 0%Clouds 58%

Rain0 in

Wind2 mph G4

Temp68°

Feels76°

Humidity93%

Partly sunny

Chance 0%Clouds 40%

Rain0 in

Wind2 mph G5

Temp73°

Feels85°

Humidity79%

Mostly sunny

Chance 0%Clouds 22%

Rain0 in

Wind3 mph G6

Temp77°

Feels90°

Humidity71%

Sunny

Chance 0%Clouds 9%

Rain0 in

Wind4 mph G9

Temp81°

Feels92°

Humidity62%

Sunny

Chance 0%Clouds 8%

Rain0 in

Wind6 mph G11

Temp82°

Feels92°

Humidity60%

Sunny

Chance 0%Clouds 7%

Rain0 in

Wind7 mph G13

Temp83°

Feels92°

Humidity59%

Sunny

Chance 0%Clouds 7%

Rain0 in

Wind7 mph G14

Temp84°

Feels93°

Humidity57%

Sunny

Chance 0%Clouds 6%

Rain0 in

Wind7 mph G14

Temp83°

Feels92°

Humidity55%

Sunny

Chance 0%Clouds 5%

Rain0 in

Wind6 mph G13

Temp84°

Feels92°

Humidity51%

Sunny

Chance 0%Clouds 5%

Rain0 in

Wind5 mph G11

Temp82°

Feels89°

Humidity55%

Sunny

Chance 0%Clouds 5%

Rain0 in

Wind6 mph G13

Temp79°

Feels79°

Humidity60%

Clear

Chance 0%Clouds 5%

Rain0 in

Wind4 mph G9

Temp75°

Feels75°

Humidity69%

Clear

Chance 0%Clouds 6%

Rain0 in

Wind3 mph G7

Temp72°

Feels72°

Humidity78%

Clear

Chance 0%Clouds 9%

Rain0 in

Wind2 mph G6

Temp73°

Feels73°

Humidity77%

Mostly clear

Chance 0%Clouds 12%

Rain0 in

Wind2 mph G5

Temp71°

Feels72°

Humidity80%

Mostly clear

Chance 0%Clouds 12%

Rain0 in

Wind2 mph G5

Temp70°

Feels71°

Humidity83%

Quick answer — San Marcos, CA

No need — San Marcos, CA

Will it rain tomorrow in San Marcos, CA: No need. No need for an umbrella during the day.

Verdict: No need
High / Low: 84° / 67°
Details: No need for an umbrella during the day.

Updated 9/25/2026 · Live conditions refresh automatically.