As of 11:15 PDT

Weather in Alpine, CA

84°

Alpine, Saturday, 8 August, 11:15

Mostly clear. Feels like 85°. High 88°, low 65°.

Pressure29.94 inHg

Wind5 mph W

Humidity45%

Visibility6.2 mi

Dew point61°

See detailed hourly forecast

Monthly outlook for Alpine, CA: average high 89.9°, average low 69.8°. That is 3° above the climate normal for August. Precipitation is expected on 2 days (about 0.2 inches), against a normal of 0 days and 0.1 inches. The warmest day looks like 22 August (93.5°), the coolest 8 August (65.5°).

89.9°/69.8°

Average high / low

+3°

Above normal

2 / 0

Wet days / normal

0.2 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 August – 17 August	88.7°	84.8°	+2.2°
18 August – 27 August	92°	84.8°	+4°
28 August – 6 September	at normal	86.5°	—

August records over 66 years

103.1°31 August 2017All-time high

51.6°22 August 1968All-time low

Climate normals and records are computed from the nearest reference point — Winter Gardens (10 mi).

Sun, 0988° / 67°

0.15

88 °

Alpine, Sunday, 9 August

Rain. High 88°, low 67°.

Pressure29.85 inHg

Wind11.2 mph W

Humidity26%

Visibility6.2 mi

Dew point54°

Mon, 1092° / 68°

92 °

Alpine, Monday, 10 August

Partly cloudy. High 92°, low 68°.

Pressure29.91 inHg

Wind9.8 mph W

Humidity28%

Visibility6.2 mi

Dew point54°

Tue, 1189° / 71°

0.04

89 °

Alpine, Tuesday, 11 August

Light rain. High 89°, low 71°.

Pressure29.97 inHg

Wind6.8 mph W

Humidity34%

Visibility6.2 mi

Dew point54°

Wed, 1290° / 70°

0.03

90 °

Alpine, Wednesday, 12 August

Light rain. High 90°, low 70°.

Pressure29.91 inHg

Wind12 mph W

Humidity32%

Visibility—

Dew point49°

Thu, 1387° / 68°

87 °

Alpine, Thursday, 13 August

Clear. High 87°, low 68°.

Pressure29.91 inHg

Wind12.4 mph W

Humidity37%

Visibility—

Dew point51°

Fri, 1485° / 68°

85 °

Alpine, Friday, 14 August

Overcast. High 85°, low 68°.

Pressure29.97 inHg

Wind11.4 mph W

Humidity32%

Visibility—

Dew point48°

Sat, 1589° / 69°

89 °

Alpine, Saturday, 15 August

Overcast. High 89°, low 69°.

Pressure29.97 inHg

Wind11.9 mph W

Humidity34%

Visibility—

Dew point51°

Sun, 1688° / 70°

88 °

Alpine, Sunday, 16 August

Overcast. High 88°, low 70°.

Pressure30.00 inHg

Wind8.9 mph W

Humidity36%

Visibility—

Dew point53°

Mon, 1792° / 71°

92 °

Alpine, Monday, 17 August

Mostly clear. High 92°, low 71°.

Pressure30.03 inHg

Wind12.3 mph W

Humidity31%

Visibility—

Dew point51°

Tue, 1891° / 69°

91 °

Alpine, Tuesday, 18 August

Clear. High 91°, low 69°.

Pressure29.94 inHg

Wind10.1 mph W

Humidity28%

Visibility—

Dew point49°

Wed, 1988° / 71°

88 °

Alpine, Wednesday, 19 August

Overcast. High 88°, low 71°.

Pressure29.88 inHg

Wind8.2 mph SW

Humidity33%

Visibility—

Dew point53°

Thu, 2093° / 72°

93 °

Alpine, Thursday, 20 August

Clear. High 93°, low 72°.

Pressure29.88 inHg

Wind10.7 mph W

Humidity31%

Visibility—

Dew point54°

Fri, 2193° / 73°

93 °

Alpine, Friday, 21 August

Overcast. High 93°, low 73°.

Pressure29.94 inHg

Wind10.7 mph W

Humidity24%

Visibility—

Dew point48°

Sat, 2294° / 72°

94 °

Alpine, Saturday, 22 August

Overcast. High 94°, low 72°.

Pressure29.97 inHg

Wind11.1 mph W

Humidity22%

Visibility—

Dew point45°

Sun, 2393° / 72°

93 °

Alpine, Sunday, 23 August

Mostly clear. High 93°, low 72°.

Pressure29.91 inHg

Wind10.5 mph W

Humidity22%

Visibility—

Dew point44°

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

Mon, 2485° / 66°

85 °

Alpine, Monday, 24 August

Climate normal for this date — 60-year average.

Average high85°

Average low66°

Average precipitation0 in

Chance of precipitation3%

Record high96° (1985)

Record low58° (1973)

Tue, 2586° / 66°

0.01

86 °

Alpine, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high86°

Average low66°

Average precipitation0.01 in

Chance of precipitation7%

Record high100° (1985)

Record low57° (1989)

Wed, 2686° / 66°

86 °

Alpine, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high86°

Average low66°

Average precipitation0 in

Chance of precipitation3%

Record high98° (2021)

Record low57° (1973)

Thu, 2787° / 66°

87 °

Alpine, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high87°

Average low66°

Average precipitation0 in

Chance of precipitation0%

Record high100° (2009)

Record low56° (1973)

Fri, 2887° / 66°

0.01

87 °

Alpine, Friday, 28 August

Climate normal for this date — 60-year average.

Average high87°

Average low66°

Average precipitation0.01 in

Chance of precipitation2%

Record high100° (2023)

Record low55° (1973)

Sat, 2988° / 67°

88 °

Alpine, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high88°

Average low67°

Average precipitation0 in

Chance of precipitation3%

Record high100° (1998)

Record low57° (2010)

Sun, 3087° / 67°

87 °

Alpine, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high87°

Average low67°

Average precipitation0 in

Chance of precipitation3%

Record high100° (1967)

Record low58° (2010)

Mon, 3186° / 66°

86 °

Alpine, Monday, 31 August

Climate normal for this date — 60-year average.

Average high86°

Average low66°

Average precipitation0 in

Chance of precipitation0%

Record high103° (2017)

Record low57° (1964)

Tue, 0186° / 66°

86 °

Alpine, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high86°

Average low66°

Average precipitation0 in

Chance of precipitation3%

Record high100° (2002)

Record low57° (1964)

Wed, 0286° / 66°

0.01

86 °

Alpine, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high86°

Average low66°

Average precipitation0.01 in

Chance of precipitation3%

Record high98° (2017)

Record low55° (1964)

Thu, 0386° / 67°

86 °

Alpine, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high86°

Average low67°

Average precipitation0 in

Chance of precipitation3%

Record high104° (1988)

Record low56° (1999)

Fri, 0487° / 67°

87 °

Alpine, Friday, 4 September

Climate normal for this date — 60-year average.

Average high87°

Average low67°

Average precipitation0 in

Chance of precipitation3%

Record high101° (1988)

Record low56° (1999)

Sat, 0587° / 67°

87 °

Alpine, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high87°

Average low67°

Average precipitation0 in

Chance of precipitation2%

Record high109° (2020)

Record low57° (1970)

Sun, 0687° / 67°

87 °

Alpine, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high87°

Average low67°

Average precipitation0 in

Chance of precipitation7%

Record high105° (2020)

Record low57° (1973)

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 Alpine, 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 Alpine, 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.