Forecast
San Marcos, CA
Do I need an umbrella tomorrow

Do I need an umbrella 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%	0 mph G3	65°	67°	97%
Clear	0%	14%	1 mph G3	64°	66°	100%
Mostly clear	0%	23%	1 mph G2	64°	66°	100%
Partly cloudy	0%	40%	1 mph G2	64°	67°	100%
Partly cloudy	0%	53%	1 mph G3	64°	67°	100%
Mostly cloudy	0%	62%	1 mph G2	63°	66°	100%
Mostly cloudy	0%	72%	2 mph G3	63°	66°	100%
Mostly cloudy	0%	70%	2 mph G3	63°	66°	100%
Mostly cloudy	0%	60%	2 mph G4	67°	76°	97%
Partly sunny	0%	42%	2 mph G4	73°	85°	79%
Mostly sunny	0%	23%	3 mph G6	79°	91°	67%
Sunny	0%	10%	4 mph G9	83°	94°	61%
Sunny	0%	8%	6 mph G11	83°	93°	59%
Sunny	0%	7%	7 mph G13	84°	93°	57%
Sunny	0%	7%	7 mph G13	84°	93°	57%
Sunny	0%	6%	7 mph G13	83°	92°	57%
Sunny	0%	5%	6 mph G12	82°	91°	55%
Sunny	0%	6%	5 mph G11	80°	87°	58%
Sunny	0%	6%	6 mph G13	78°	78°	62%
Clear	0%	5%	4 mph G9	74°	74°	71%
Clear	0%	6%	3 mph G7	73°	73°	76%
Clear	0%	8%	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

Wind0 mph G3

Temp65°

Feels67°

Humidity97%

Clear

Chance 0%Clouds 14%

Rain0 in

Wind1 mph G3

Temp64°

Feels66°

Humidity100%

Mostly clear

Chance 0%Clouds 23%

Rain0 in

Wind1 mph G2

Temp64°

Feels66°

Humidity100%

Partly cloudy

Chance 0%Clouds 40%

Rain0 in

Wind1 mph G2

Temp64°

Feels67°

Humidity100%

Partly cloudy

Chance 0%Clouds 53%

Rain0 in

Wind1 mph G3

Temp64°

Feels67°

Humidity100%

Mostly cloudy

Chance 0%Clouds 62%

Rain0 in

Wind1 mph G2

Temp63°

Feels66°

Humidity100%

Mostly cloudy

Chance 0%Clouds 72%

Rain0 in

Wind2 mph G3

Temp63°

Feels66°

Humidity100%

Mostly cloudy

Chance 0%Clouds 70%

Rain0 in

Wind2 mph G3

Temp63°

Feels66°

Humidity100%

Mostly cloudy

Chance 0%Clouds 60%

Rain0 in

Wind2 mph G4

Temp67°

Feels76°

Humidity97%

Partly sunny

Chance 0%Clouds 42%

Rain0 in

Wind2 mph G4

Temp73°

Feels85°

Humidity79%

Mostly sunny

Chance 0%Clouds 23%

Rain0 in

Wind3 mph G6

Temp79°

Feels91°

Humidity67%

Sunny

Chance 0%Clouds 10%

Rain0 in

Wind4 mph G9

Temp83°

Feels94°

Humidity61%

Sunny

Chance 0%Clouds 8%

Rain0 in

Wind6 mph G11

Temp83°

Feels93°

Humidity59%

Sunny

Chance 0%Clouds 7%

Rain0 in

Wind7 mph G13

Temp84°

Feels93°

Humidity57%

Sunny

Chance 0%Clouds 7%

Rain0 in

Wind7 mph G13

Temp84°

Feels93°

Humidity57%

Sunny

Chance 0%Clouds 6%

Rain0 in

Wind7 mph G13

Temp83°

Feels92°

Humidity57%

Sunny

Chance 0%Clouds 5%

Rain0 in

Wind6 mph G12

Temp82°

Feels91°

Humidity55%

Sunny

Chance 0%Clouds 6%

Rain0 in

Wind5 mph G11

Temp80°

Feels87°

Humidity58%

Sunny

Chance 0%Clouds 6%

Rain0 in

Wind6 mph G13

Temp78°

Feels78°

Humidity62%

Clear

Chance 0%Clouds 5%

Rain0 in

Wind4 mph G9

Temp74°

Feels74°

Humidity71%

Clear

Chance 0%Clouds 6%

Rain0 in

Wind3 mph G7

Temp73°

Feels73°

Humidity76%

Clear

Chance 0%Clouds 8%

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

Do I need an umbrella 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.