As of 22:34 PDT

Weather in Tassajara, CA

66°

Tassajara, Saturday, 8 August, 22:34

Clear. Feels like 65°. High 86°, low 58°.

Pressure29.85 inHg

Wind7.2 mph SW

Humidity58%

Visibility6.2 mi

Dew point51°

See detailed hourly forecast

Monthly outlook for Tassajara, CA: average high 86.9°, average low 56.1°. That is 0.9° 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 10 August (96.2°), the coolest 20 August (51.4°).

86.9°/56.1°

Average high / low

+0.9°

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	88.3°	86°	+1.3°
18 August – 27 August	84.5°	84.5°	+0°
28 August – 6 September	at normal	86.1°	—

August records over 66 years

107.6°16 August 2020All-time high

52.3°29 August 1980All-time low

Climate normals and records are computed from the nearest reference point — Antioch (13 mi).

Sun, 0991° / 60°

91 °

Tassajara, Sunday, 9 August

Clear. High 91°, low 60°.

Pressure29.80 inHg

Wind3.6 mph W

Humidity12%

Visibility6.2 mi

Dew point39°

Mon, 1096° / 61°

96 °

Tassajara, Monday, 10 August

Overcast. High 96°, low 61°.

Pressure29.83 inHg

Wind6.4 mph SW

Humidity16%

Visibility6.2 mi

Dew point42°

Tue, 1196° / 59°

96 °

Tassajara, Tuesday, 11 August

Clear. High 96°, low 59°.

Pressure29.88 inHg

Wind5 mph SW

Humidity15%

Visibility6.2 mi

Dew point39°

Wed, 1291° / 60°

91 °

Tassajara, Wednesday, 12 August

Overcast. High 91°, low 60°.

Pressure29.83 inHg

Wind6 mph SW

Humidity21%

Visibility6.2 mi

Dew point44°

Thu, 1385° / 59°

85 °

Tassajara, Thursday, 13 August

Overcast. High 85°, low 59°.

Pressure29.80 inHg

Wind11.1 mph W

Humidity27%

Visibility—

Dew point44°

Fri, 1485° / 55°

85 °

Tassajara, Friday, 14 August

Clear. High 85°, low 55°.

Pressure29.91 inHg

Wind11.1 mph SW

Humidity27%

Visibility—

Dew point44°

Sat, 1586° / 55°

86 °

Tassajara, Saturday, 15 August

Clear. High 86°, low 55°.

Pressure29.97 inHg

Wind12.5 mph SW

Humidity25%

Visibility—

Dew point43°

Sun, 1684° / 55°

84 °

Tassajara, Sunday, 16 August

Overcast. High 84°, low 55°.

Pressure30.00 inHg

Wind12.5 mph SW

Humidity25%

Visibility—

Dew point42°

Mon, 1783° / 57°

83 °

Tassajara, Monday, 17 August

Overcast. High 83°, low 57°.

Pressure30.00 inHg

Wind10.2 mph W

Humidity26%

Visibility—

Dew point42°

Tue, 1883° / 56°

83 °

Tassajara, Tuesday, 18 August

Overcast. High 83°, low 56°.

Pressure30.00 inHg

Wind13 mph SW

Humidity23%

Visibility—

Dew point39°

Wed, 1987° / 53°

87 °

Tassajara, Wednesday, 19 August

Clear. High 87°, low 53°.

Pressure29.94 inHg

Wind12 mph SW

Humidity19%

Visibility—

Dew point36°

Thu, 2079° / 51°

79 °

Tassajara, Thursday, 20 August

Overcast. High 79°, low 51°.

Pressure29.91 inHg

Wind10.2 mph W

Humidity30%

Visibility—

Dew point42°

Fri, 2190° / 53°

90 °

Tassajara, Friday, 21 August

Partly cloudy. High 90°, low 53°.

Pressure29.83 inHg

Wind10.2 mph SW

Humidity19%

Visibility—

Dew point38°

Sat, 2283° / 54°

83 °

Tassajara, Saturday, 22 August

Overcast. High 83°, low 54°.

Pressure29.91 inHg

Wind11.7 mph SW

Humidity29%

Visibility—

Dew point44°

Sun, 2386° / 54°

86 °

Tassajara, Sunday, 23 August

Clear. High 86°, low 54°.

Pressure29.88 inHg

Wind10.9 mph SW

Humidity25%

Visibility—

Dew point43°

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

Mon, 2485° / 59°

85 °

Tassajara, Monday, 24 August

Climate normal for this date — 60-year average.

Average high85°

Average low59°

Average precipitation0 in

Chance of precipitation0%

Record high99° (2010)

Record low53° (1970)

Tue, 2585° / 59°

85 °

Tassajara, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high85°

Average low59°

Average precipitation0 in

Chance of precipitation0%

Record high99° (2010)

Record low54° (1960)

Wed, 2685° / 58°

85 °

Tassajara, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high85°

Average low58°

Average precipitation0 in

Chance of precipitation0%

Record high99° (2017)

Record low54° (1970)

Thu, 2786° / 59°

86 °

Tassajara, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high86°

Average low59°

Average precipitation0 in

Chance of precipitation0%

Record high103° (2017)

Record low53° (1960)

Fri, 2887° / 60°

87 °

Tassajara, Friday, 28 August

Climate normal for this date — 60-year average.

Average high87°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high102° (2021)

Record low54° (1960)

Sat, 2985° / 59°

85 °

Tassajara, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high85°

Average low59°

Average precipitation0 in

Chance of precipitation0%

Record high99° (2009)

Record low52° (1980)

Sun, 3085° / 60°

85 °

Tassajara, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high85°

Average low60°

Average precipitation0 in

Chance of precipitation3%

Record high99° (2025)

Record low53° (2010)

Mon, 3186° / 59°

86 °

Tassajara, Monday, 31 August

Climate normal for this date — 60-year average.

Average high86°

Average low59°

Average precipitation0 in

Chance of precipitation0%

Record high100° (2025)

Record low53° (1970)

Tue, 0187° / 59°

87 °

Tassajara, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high87°

Average low59°

Average precipitation0 in

Chance of precipitation0%

Record high108° (2017)

Record low53° (1970)

Wed, 0286° / 60°

86 °

Tassajara, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high86°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high107° (2017)

Record low53° (1960)

Thu, 0386° / 59°

86 °

Tassajara, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high86°

Average low59°

Average precipitation0 in

Chance of precipitation0%

Record high102° (2017)

Record low52° (1970)

Fri, 0486° / 59°

86 °

Tassajara, Friday, 4 September

Climate normal for this date — 60-year average.

Average high86°

Average low59°

Average precipitation0 in

Chance of precipitation0%

Record high102° (2022)

Record low52° (1960)

Sat, 0586° / 59°

86 °

Tassajara, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high86°

Average low59°

Average precipitation0 in

Chance of precipitation2%

Record high110° (2022)

Record low52° (2000)

Sun, 0686° / 59°

86 °

Tassajara, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high86°

Average low59°

Average precipitation0 in

Chance of precipitation2%

Record high113° (2022)

Record low53° (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 Tassajara, 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 Tassajara, 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.