As of 13:26 PDT

Weather in Keystone, CA

78°

Keystone, Saturday, 8 August, 13:26

Clear. Feels like 79°. High 87°, low 71°.

Pressure29.91 inHg

Wind8 mph W

Humidity76%

Visibility6.2 mi

Dew point70°

See detailed hourly forecast

Monthly outlook for Keystone, CA: average high 81.6°, average low 71.5°. That is 1.1° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 0 days and 0.1 inches. The warmest day looks like 9 August (94.1°), the coolest 13 August (69.8°).

81.6°/71.5°

Average high / low

+1.1°

Above normal

0 / 0

Wet days / normal

0.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 August – 17 August	82.3°	79.8°	+1.4°
18 August – 27 August	80.4°	80°	+0.2°
28 August – 6 September	at normal	81.3°	—

August records over 66 years

96.6°30 August 1967All-time high

55°9 August 2010All-time low

Climate normals and records are computed from the nearest reference point — Torrance (4 mi).

Sun, 0994° / 70°

94 °

Keystone, Sunday, 9 August

Clear. High 94°, low 70°.

Pressure29.85 inHg

Wind8.4 mph SW

Humidity55%

Visibility6.2 mi

Dew point61°

Mon, 1082° / 71°

82 °

Keystone, Monday, 10 August

Partly cloudy. High 82°, low 71°.

Pressure29.91 inHg

Wind7.1 mph SW

Humidity53%

Visibility6.2 mi

Dew point60°

Tue, 1181° / 72°

81 °

Keystone, Tuesday, 11 August

Clear. High 81°, low 72°.

Pressure29.97 inHg

Wind8.2 mph SW

Humidity53%

Visibility6.2 mi

Dew point60°

Wed, 1280° / 72°

80 °

Keystone, Wednesday, 12 August

Overcast. High 80°, low 72°.

Pressure29.88 inHg

Wind7.1 mph SW

Humidity56%

Visibility6.2 mi

Dew point60°

Thu, 1377° / 70°

77 °

Keystone, Thursday, 13 August

Overcast. High 77°, low 70°.

Pressure29.91 inHg

Wind10.1 mph SW

Humidity67%

Visibility—

Dew point62°

Fri, 1479° / 70°

79 °

Keystone, Friday, 14 August

Overcast. High 79°, low 70°.

Pressure29.97 inHg

Wind11.2 mph W

Humidity63%

Visibility—

Dew point61°

Sat, 1579° / 70°

79 °

Keystone, Saturday, 15 August

Mostly clear. High 79°, low 70°.

Pressure30.00 inHg

Wind11.9 mph W

Humidity58%

Visibility—

Dew point60°

Sun, 1682° / 72°

82 °

Keystone, Sunday, 16 August

Partly cloudy. High 82°, low 72°.

Pressure30.00 inHg

Wind12.7 mph W

Humidity53%

Visibility—

Dew point59°

Mon, 1783° / 72°

83 °

Keystone, Monday, 17 August

Partly cloudy. High 83°, low 72°.

Pressure30.03 inHg

Wind13.6 mph W

Humidity53%

Visibility—

Dew point59°

Tue, 1883° / 73°

83 °

Keystone, Tuesday, 18 August

Clear. High 83°, low 73°.

Pressure29.94 inHg

Wind10.3 mph W

Humidity52%

Visibility—

Dew point60°

Wed, 1981° / 72°

81 °

Keystone, Wednesday, 19 August

Clear. High 81°, low 72°.

Pressure29.88 inHg

Wind8.8 mph SE

Humidity59%

Visibility—

Dew point63°

Thu, 2080° / 73°

80 °

Keystone, Thursday, 20 August

Mostly clear. High 80°, low 73°.

Pressure29.88 inHg

Wind10 mph SE

Humidity68%

Visibility—

Dew point66°

Fri, 2180° / 73°

80 °

Keystone, Friday, 21 August

Mostly clear. High 80°, low 73°.

Pressure29.88 inHg

Wind8.9 mph S

Humidity66%

Visibility—

Dew point65°

Sat, 2279° / 72°

79 °

Keystone, Saturday, 22 August

Overcast. High 79°, low 72°.

Pressure29.88 inHg

Wind8.9 mph SW

Humidity69%

Visibility—

Dew point65°

Sun, 2378° / 71°

78 °

Keystone, Sunday, 23 August

Clear. High 78°, low 71°.

Pressure29.91 inHg

Wind11.1 mph W

Humidity69%

Visibility—

Dew point64°

From day 17 onward the outlook is built from 60-year climate statistics

Mon, 2480° / 63°

80 °

Keystone, Monday, 24 August

Climate normal for this date — 60-year average.

Average high80°

Average low63°

Average precipitation0 in

Chance of precipitation0%

Record high91° (1985)

Record low57° (1978)

Tue, 2580° / 63°

80 °

Keystone, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high80°

Average low63°

Average precipitation0 in

Chance of precipitation0%

Record high93° (1985)

Record low59° (2013)

Wed, 2681° / 64°

81 °

Keystone, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0 in

Chance of precipitation0%

Record high94° (1981)

Record low58° (1975)

Thu, 2781° / 64°

81 °

Keystone, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0 in

Chance of precipitation0%

Record high92° (1981)

Record low58° (1973)

Fri, 2882° / 64°

82 °

Keystone, Friday, 28 August

Climate normal for this date — 60-year average.

Average high82°

Average low64°

Average precipitation0 in

Chance of precipitation0%

Record high91° (1981)

Record low57° (1991)

Sat, 2982° / 64°

82 °

Keystone, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high82°

Average low64°

Average precipitation0 in

Chance of precipitation0%

Record high94° (1967)

Record low57° (2002)

Sun, 3081° / 64°

81 °

Keystone, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0 in

Chance of precipitation0%

Record high97° (1967)

Record low58° (2010)

Mon, 3180° / 64°

80 °

Keystone, Monday, 31 August

Climate normal for this date — 60-year average.

Average high80°

Average low64°

Average precipitation0 in

Chance of precipitation2%

Record high91° (2017)

Record low58° (1973)

Tue, 0181° / 64°

0.01

81 °

Keystone, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0.01 in

Chance of precipitation2%

Record high96° (1998)

Record low57° (1973)

Wed, 0281° / 64°

0.01

81 °

Keystone, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0.01 in

Chance of precipitation2%

Record high94° (1987)

Record low57° (2010)

Thu, 0381° / 64°

81 °

Keystone, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0 in

Chance of precipitation5%

Record high97° (2017)

Record low57° (1973)

Fri, 0482° / 64°

82 °

Keystone, Friday, 4 September

Climate normal for this date — 60-year average.

Average high82°

Average low64°

Average precipitation0 in

Chance of precipitation2%

Record high104° (1988)

Record low57° (1970)

Sat, 0581° / 65°

0.02

81 °

Keystone, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high81°

Average low65°

Average precipitation0.02 in

Chance of precipitation3%

Record high98° (1984)

Record low58° (1964)

Sun, 0682° / 64°

0.01

82 °

Keystone, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high82°

Average low64°

Average precipitation0.01 in

Chance of precipitation3%

Record high98° (2020)

Record low56° (1970)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Keystone, CA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Keystone, CA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.