Current Conditions

Altadena, California

84°F29°C

Clear

Wind

SW 6 mph9 km/h

Humidity

37%

Cloud Cover

As of Wednesday, September 23, 2026 at 4:09 PM PDT

Today's Outlook

Day

Mostly clear and hot, with a high of 88°F31°C and morning low of 82°F28°C. Light wind from the SW around 4 mph7 km/h.

Night

Mostly clear, with a low around 69°F20°C. Light wind from the SE around 2 mph4 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Clear	High 88°F31°C	Low 69°F20°C	Precip 0 in0 mm—	Cloud 3%	Wind SSW 4 mph6 km/h	Wednesday: Mostly clear and hot, with a high of 88°F31°C and morning low of 82°F28°C. Light wind from the SW around 4 mph7 km/h. Wednesday Night: Mostly clear, with a low around 69°F20°C. Light wind from the SE around 2 mph4 km/h.
Drizzle	High 85°F30°C	Low 65°F18°C	Precip 0 in0.1 mm11%	Cloud 10%	Wind SSW 3 mph5 km/h	Thursday: Mostly clear and warm, with a high of 85°F30°C and morning low of 69°F21°C. Light wind from the SSW around 4 mph7 km/h. 11% chance of drizzle. Thursday Night: Mostly clear, with a low around 65°F18°C. Light wind from the E around 2 mph3 km/h.
Clear	High 86°F30°C	Low 66°F19°C	Precip 0 in0 mm—	Cloud 16%	Wind SW 3 mph5 km/h	Friday: Mostly clear and warm, with a high of 86°F30°C and morning low of 70°F21°C. Breezy from the SW at 5 to 8 mph8 to 12 km/h. Friday Night: Mostly clear, with a low around 66°F19°C. Light wind from the ENE around 2 mph3 km/h.
Partly Cloudy	High 87°F31°C	Low 65°F18°C	Precip 0 in0 mm—	Cloud 65%	Wind S 4 mph6 km/h	Saturday: Mostly cloudy and hot, with a high of 87°F31°C and morning low of 70°F21°C. Breezy from the SSW at 5 to 8 mph8 to 12 km/h. Saturday Night: Mostly cloudy, with a low around 65°F18°C. Light wind from the ESE around 2 mph3 km/h.
Drizzle	High 77°F25°C	Low 67°F19°C	Precip 0.06 in1.5 mm20%	Cloud 58%	Wind S 3 mph6 km/h	Sunday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 68°F20°C. Breezy from the S at 5 to 7 mph8 to 11 km/h. 20% chance of drizzle throughout the day. Sunday Night: Mostly cloudy, with a low around 67°F19°C. Light wind from the SE around 2 mph3 km/h. 14% chance of drizzle before dawn.
Showers	High 78°F25°C	Low 63°F17°C	Precip 0.1 in2.6 mm26%	Cloud 33%	Wind SSW 3 mph5 km/h	Monday: Partly cloudy and warm, with a high of 78°F25°C and morning low of 66°F19°C. Light wind from the SSW around 4 mph7 km/h. 26% chance of showers throughout the day. Monday Night: Partly cloudy, with a low around 63°F17°C. Light wind from the NE around 2 mph3 km/h. 19% chance of drizzle throughout the night.
Showers	High 83°F28°C	Low 62°F17°C	Precip 0.14 in3.6 mm25%	Cloud 24%	Wind NE 4 mph6 km/h	Tuesday: Partly cloudy and warm, with a high of 83°F28°C and morning low of 66°F19°C. Light wind from the E around 5 mph8 km/h. 25% chance of showers throughout the day. Dry air. Tuesday Night: Mostly clear, with a low around 62°F17°C. Light wind from the NE around 3 mph5 km/h. 17% chance of drizzle throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 23	88°F31°C	69°F20°C	0 in0 mm· —	3%	Clear	SSW 4 mph6 km/h
DayMostly clear and hot, with a high of 88°F31°C and morning low of 82°F28°C. Light wind from the SW around 4 mph7 km/h. NightMostly clear, with a low around 69°F20°C. Light wind from the SE around 2 mph4 km/h.
	ThursdaySep 24	85°F30°C	65°F18°C	0 in0.1 mm· 11%	10%	Drizzle	SSW 3 mph5 km/h
DayMostly clear and warm, with a high of 85°F30°C and morning low of 69°F21°C. Light wind from the SSW around 4 mph7 km/h. 11% chance of drizzle. NightMostly clear, with a low around 65°F18°C. Light wind from the E around 2 mph3 km/h.
	FridaySep 25	86°F30°C	66°F19°C	0 in0 mm· —	16%	Clear	SW 3 mph5 km/h
DayMostly clear and warm, with a high of 86°F30°C and morning low of 70°F21°C. Breezy from the SW at 5 to 8 mph8 to 12 km/h. NightMostly clear, with a low around 66°F19°C. Light wind from the ENE around 2 mph3 km/h.
	SaturdaySep 26	87°F31°C	65°F18°C	0 in0 mm· —	65%	Partly Cloudy	S 4 mph6 km/h
DayMostly cloudy and hot, with a high of 87°F31°C and morning low of 70°F21°C. Breezy from the SSW at 5 to 8 mph8 to 12 km/h. NightMostly cloudy, with a low around 65°F18°C. Light wind from the ESE around 2 mph3 km/h.
	SundaySep 27	77°F25°C	67°F19°C	0.06 in1.5 mm· 20%	58%	Drizzle	S 3 mph6 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 68°F20°C. Breezy from the S at 5 to 7 mph8 to 11 km/h. 20% chance of drizzle throughout the day. NightMostly cloudy, with a low around 67°F19°C. Light wind from the SE around 2 mph3 km/h. 14% chance of drizzle before dawn.
	MondaySep 28	78°F25°C	63°F17°C	0.1 in2.6 mm· 26%	33%	Showers	SSW 3 mph5 km/h
DayPartly cloudy and warm, with a high of 78°F25°C and morning low of 66°F19°C. Light wind from the SSW around 4 mph7 km/h. 26% chance of showers throughout the day. NightPartly cloudy, with a low around 63°F17°C. Light wind from the NE around 2 mph3 km/h. 19% chance of drizzle throughout the night.
	TuesdaySep 29	83°F28°C	62°F17°C	0.14 in3.6 mm· 25%	24%	Showers	NE 4 mph6 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 66°F19°C. Light wind from the E around 5 mph8 km/h. 25% chance of showers throughout the day. Dry air. NightMostly clear, with a low around 62°F17°C. Light wind from the NE around 3 mph5 km/h. 17% chance of drizzle throughout the night.
	WednesdaySep 30	84°F29°C	63°F17°C	0.08 in2 mm· 15%	26%	Drizzle	S 4 mph6 km/h
DayPartly cloudy and warm, with a high of 84°F29°C and morning low of 67°F20°C. Light wind from the SSW around 5 mph7 km/h. 15% chance of drizzle throughout the day. Dry air. NightPartly cloudy, with a low around 63°F17°C. Light wind from the NE around 3 mph5 km/h. 15% chance of drizzle throughout the night.
	ThursdayOct 1	85°F29°C	64°F18°C	0.03 in0.8 mm· 7%	32%	Clear	SSW 3 mph6 km/h
DayPartly cloudy and warm, with a high of 85°F29°C and morning low of 67°F20°C. Light wind from the SW around 4 mph7 km/h. NightPartly cloudy, with a low around 64°F18°C. Light wind from the NE around 2 mph4 km/h.
	FridayOct 2	86°F30°C	64°F18°C	0.02 in0.6 mm· 6%	23%	Clear	S 3 mph5 km/h
DayMostly clear and hot, with a high of 86°F30°C and morning low of 68°F20°C. Light wind from the SW around 4 mph7 km/h. Dry air. NightMostly clear, with a low around 64°F18°C. Light wind from the NE around 2 mph4 km/h.
	SaturdayOct 3	87°F30°C	65°F18°C	0.02 in0.6 mm· 5%	20%	Clear	ENE 4 mph6 km/h
DayMostly clear and hot, with a high of 87°F30°C and morning low of 68°F20°C. Light wind from the S around 5 mph7 km/h. Dry air. NightMostly clear, with a low around 65°F18°C. Light wind from the NE around 3 mph5 km/h.
	SundayOct 4	86°F30°C	65°F19°C	0.06 in1.5 mm· 11%	24%	Drizzle	ENE 4 mph6 km/h
DayPartly cloudy and hot, with a high of 86°F30°C and morning low of 70°F21°C. Light wind from the SE around 5 mph8 km/h. 10% chance of drizzle throughout the day. Dry air. NightMostly clear, with a low around 65°F19°C. Light wind from the NE around 3 mph5 km/h. 11% chance of drizzle throughout the night.
	MondayOct 5	86°F30°C	65°F18°C	0.05 in1.3 mm· 10%	25%	Drizzle	ENE 4 mph6 km/h
DayPartly cloudy and hot, with a high of 86°F30°C and morning low of 68°F20°C. Light wind from the S around 5 mph7 km/h. 10% chance of drizzle throughout the day. Dry air. NightMostly clear, with a low around 65°F18°C. Light wind from the NE around 3 mph5 km/h.
	TuesdayOct 6	86°F30°C	65°F19°C	0.04 in1.1 mm· 12%	22%	Drizzle	ENE 4 mph6 km/h
DayMostly clear and hot, with a high of 86°F30°C and morning low of 68°F20°C. Light wind from the S around 5 mph7 km/h. 12% chance of drizzle throughout the day. Dry air. NightMostly clear, with a low around 65°F19°C. Light wind from the NE around 3 mph5 km/h.
	WednesdayOct 7	86°F30°C	65°F19°C	0.07 in1.7 mm· 12%	22%	Drizzle	E 4 mph6 km/h
DayMostly clear and hot, with a high of 86°F30°C and morning low of 69°F20°C. Light wind from the SSW around 4 mph7 km/h. 12% chance of drizzle throughout the day. Dry air. NightMostly clear, with a low around 65°F19°C. Light wind from the NE around 3 mph5 km/h.

Nearby Cities

Pasadena3 mi5 km La Cañada Flintridge3 mi5 km South Pasadena5 mi8 km Arcadia6 mi10 km Alhambra7 mi11 km San Gabriel7 mi11 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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Coordinates: 34.1897°N, 118.1312°W·Elevation: 414m·Timezone: America/Los_Angeles·Population: 42,777