As of 00:43 PDT

Weather in Berryessa, CA

63°

Berryessa, Sunday, 9 August, 00:43

Clear. Feels like 63°. High 90°, low 63°.

Pressure29.85 inHg

Wind1.6 mph SE

Humidity83%

Visibility6.2 mi

Dew point58°

See detailed hourly forecast

Monthly outlook for Berryessa, CA: average high 90.3°, average low 60.1°. That is 4.3° 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 11 August (101.1°), the coolest 17 August (56.8°).

90.3°/60.1°

Average high / low

+4.3°

Above normal

0 / 0

Wet days / normal

0.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 August – 18 August	91.2°	83.1°	+4.5°
19 August – 28 August	88.8°	82.2°	+3.7°
29 August – 7 September	at normal	83.6°	—

August records over 66 years

105.6°4 August 1998All-time high

48.4°23 August 1973All-time low

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

Mon, 1093° / 65°

93 °

Berryessa, Monday, 10 August

Overcast. High 93°, low 65°.

Pressure29.85 inHg

Wind3.1 mph W

Humidity15%

Visibility6.2 mi

Dew point42°

Tue, 11101° / 66°

101 °

Berryessa, Tuesday, 11 August

Clear. High 101°, low 66°.

Pressure29.88 inHg

Wind3.6 mph W

Humidity13%

Visibility6.2 mi

Dew point37°

Wed, 1298° / 61°

98 °

Berryessa, Wednesday, 12 August

Clear. High 98°, low 61°.

Pressure29.83 inHg

Wind4.6 mph S

Humidity17%

Visibility6.2 mi

Dew point43°

Thu, 1387° / 58°

87 °

Berryessa, Thursday, 13 August

Clear. High 87°, low 58°.

Pressure29.83 inHg

Wind7.1 mph S

Humidity28%

Visibility—

Dew point47°

Fri, 1491° / 57°

91 °

Berryessa, Friday, 14 August

Clear. High 91°, low 57°.

Pressure29.88 inHg

Wind6.5 mph NW

Humidity22%

Visibility—

Dew point43°

Sat, 1592° / 58°

92 °

Berryessa, Saturday, 15 August

Partly cloudy. High 92°, low 58°.

Pressure29.94 inHg

Wind5.3 mph NW

Humidity21%

Visibility—

Dew point43°

Sun, 1690° / 61°

90 °

Berryessa, Sunday, 16 August

Overcast. High 90°, low 61°.

Pressure30.00 inHg

Wind6.5 mph NW

Humidity28%

Visibility—

Dew point50°

Mon, 1786° / 57°

86 °

Berryessa, Monday, 17 August

Partly cloudy. High 86°, low 57°.

Pressure30.03 inHg

Wind7.5 mph NW

Humidity23%

Visibility—

Dew point41°

Tue, 1884° / 58°

84 °

Berryessa, Tuesday, 18 August

Clear. High 84°, low 58°.

Pressure30.00 inHg

Wind11.2 mph NW

Humidity38%

Visibility—

Dew point53°

Wed, 1984° / 64°

84 °

Berryessa, Wednesday, 19 August

Clear. High 84°, low 64°.

Pressure29.94 inHg

Wind11.7 mph NW

Humidity40%

Visibility—

Dew point55°

Thu, 2082° / 62°

82 °

Berryessa, Thursday, 20 August

Overcast. High 82°, low 62°.

Pressure29.97 inHg

Wind12 mph NW

Humidity45%

Visibility—

Dew point57°

Fri, 2188° / 57°

88 °

Berryessa, Friday, 21 August

Overcast. High 88°, low 57°.

Pressure29.91 inHg

Wind9.9 mph NW

Humidity26%

Visibility—

Dew point46°

Sat, 2291° / 57°

91 °

Berryessa, Saturday, 22 August

Mostly clear. High 91°, low 57°.

Pressure29.91 inHg

Wind9.3 mph NW

Humidity19%

Visibility—

Dew point40°

Sun, 2393° / 60°

93 °

Berryessa, Sunday, 23 August

Mostly clear. High 93°, low 60°.

Pressure29.88 inHg

Wind8.2 mph NW

Humidity19%

Visibility—

Dew point41°

Mon, 2494° / 57°

94 °

Berryessa, Monday, 24 August

Clear. High 94°, low 57°.

Pressure29.83 inHg

Wind5.2 mph W

Humidity14%

Visibility—

Dew point34°

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

Tue, 2582° / 60°

82 °

Berryessa, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high82°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high99° (1988)

Record low54° (1963)

Wed, 2683° / 59°

83 °

Berryessa, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high83°

Average low59°

Average precipitation0 in

Chance of precipitation0%

Record high97° (1988)

Record low53° (1970)

Thu, 2784° / 61°

84 °

Berryessa, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high84°

Average low61°

Average precipitation0 in

Chance of precipitation0%

Record high98° (1993)

Record low52° (1960)

Fri, 2885° / 61°

85 °

Berryessa, Friday, 28 August

Climate normal for this date — 60-year average.

Average high85°

Average low61°

Average precipitation0 in

Chance of precipitation0%

Record high100° (2009)

Record low53° (1969)

Sat, 2983° / 61°

83 °

Berryessa, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high83°

Average low61°

Average precipitation0 in

Chance of precipitation2%

Record high100° (2009)

Record low52° (1980)

Sun, 3082° / 60°

82 °

Berryessa, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high82°

Average low60°

Average precipitation0 in

Chance of precipitation2%

Record high97° (2007)

Record low51° (2010)

Mon, 3183° / 60°

83 °

Berryessa, Monday, 31 August

Climate normal for this date — 60-year average.

Average high83°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high96° (1998)

Record low53° (2008)

Tue, 0184° / 60°

84 °

Berryessa, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high84°

Average low60°

Average precipitation0 in

Chance of precipitation2%

Record high108° (2017)

Record low52° (1964)

Wed, 0284° / 62°

84 °

Berryessa, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high84°

Average low62°

Average precipitation0 in

Chance of precipitation0%

Record high109° (2017)

Record low52° (1960)

Thu, 0383° / 61°

83 °

Berryessa, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high83°

Average low61°

Average precipitation0 in

Chance of precipitation0%

Record high100° (2017)

Record low53° (1995)

Fri, 0483° / 61°

83 °

Berryessa, Friday, 4 September

Climate normal for this date — 60-year average.

Average high83°

Average low61°

Average precipitation0 in

Chance of precipitation0%

Record high101° (1988)

Record low52° (1960)

Sat, 0584° / 61°

84 °

Berryessa, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high84°

Average low61°

Average precipitation0 in

Chance of precipitation0%

Record high101° (2022)

Record low52° (1996)

Sun, 0684° / 62°

84 °

Berryessa, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high84°

Average low62°

Average precipitation0 in

Chance of precipitation0%

Record high113° (2022)

Record low53° (1973)

Mon, 0785° / 62°

85 °

Berryessa, Monday, 7 September

Climate normal for this date — 60-year average.

Average high85°

Average low62°

Average precipitation0 in

Chance of precipitation0%

Record high103° (2020)

Record low52° (1978)

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 Berryessa, 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 Berryessa, 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.