As of 23:11 PDT

Weather in Penngrove, CA

56°

Penngrove, Saturday, 8 August, 23:11

Clear. Feels like 55°. High 88°, low 56°.

Pressure29.88 inHg

Wind3 mph W

Humidity75%

Visibility6.2 mi

Dew point51°

See detailed hourly forecast

Monthly outlook for Penngrove, CA: average high 86.1°, average low 53.8°. That is 3.2° 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 (92.8°), the coolest 20 August (50.5°).

86.1°/53.8°

Average high / low

+3.2°

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	86.8°	80.9°	+3.2°
18 August – 27 August	84.9°	79.6°	+2.9°
28 August – 6 September	at normal	81.6°	—

August records over 66 years

99.9°24 August 2010All-time high

48.4°10 August 1960All-time low

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

Sun, 0991° / 58°

91 °

Penngrove, Sunday, 9 August

Clear. High 91°, low 58°.

Pressure29.80 inHg

Wind4.7 mph SW

Humidity13%

Visibility6.2 mi

Dew point43°

Mon, 1091° / 55°

91 °

Penngrove, Monday, 10 August

Overcast. High 91°, low 55°.

Pressure29.83 inHg

Wind4.6 mph S

Humidity23%

Visibility6.2 mi

Dew point48°

Tue, 1193° / 53°

93 °

Penngrove, Tuesday, 11 August

Clear. High 93°, low 53°.

Pressure29.88 inHg

Wind2.4 mph S

Humidity20%

Visibility6.2 mi

Dew point48°

Wed, 1290° / 53°

90 °

Penngrove, Wednesday, 12 August

Overcast. High 90°, low 53°.

Pressure29.83 inHg

Wind4.7 mph SE

Humidity26%

Visibility6.2 mi

Dew point49°

Thu, 1381° / 53°

81 °

Penngrove, Thursday, 13 August

Clear. High 81°, low 53°.

Pressure29.83 inHg

Wind12 mph S

Humidity36%

Visibility—

Dew point49°

Fri, 1484° / 55°

84 °

Penngrove, Friday, 14 August

Clear. High 84°, low 55°.

Pressure29.91 inHg

Wind11.1 mph SW

Humidity31%

Visibility—

Dew point47°

Sat, 1585° / 54°

85 °

Penngrove, Saturday, 15 August

Clear. High 85°, low 54°.

Pressure30.00 inHg

Wind10.5 mph W

Humidity31%

Visibility—

Dew point48°

Sun, 1686° / 53°

86 °

Penngrove, Sunday, 16 August

Overcast. High 86°, low 53°.

Pressure30.03 inHg

Wind10.6 mph W

Humidity25%

Visibility—

Dew point43°

Mon, 1779° / 54°

79 °

Penngrove, Monday, 17 August

Overcast. High 79°, low 54°.

Pressure30.03 inHg

Wind8.8 mph SW

Humidity36%

Visibility—

Dew point47°

Tue, 1884° / 54°

84 °

Penngrove, Tuesday, 18 August

Clear. High 84°, low 54°.

Pressure30.00 inHg

Wind10.2 mph SW

Humidity27%

Visibility—

Dew point43°

Wed, 1985° / 51°

85 °

Penngrove, Wednesday, 19 August

Partly cloudy. High 85°, low 51°.

Pressure29.94 inHg

Wind9.9 mph SW

Humidity25%

Visibility—

Dew point42°

Thu, 2084° / 50°

84 °

Penngrove, Thursday, 20 August

Overcast. High 84°, low 50°.

Pressure29.88 inHg

Wind6 mph SW

Humidity27%

Visibility—

Dew point43°

Fri, 2191° / 54°

91 °

Penngrove, Friday, 21 August

Overcast. High 91°, low 54°.

Pressure29.83 inHg

Wind6.6 mph SW

Humidity20%

Visibility—

Dew point40°

Sat, 2282° / 53°

82 °

Penngrove, Saturday, 22 August

Overcast. High 82°, low 53°.

Pressure29.94 inHg

Wind10.6 mph SW

Humidity34%

Visibility—

Dew point48°

Sun, 2384° / 52°

84 °

Penngrove, Sunday, 23 August

Clear. High 84°, low 52°.

Pressure29.91 inHg

Wind10.5 mph W

Humidity30%

Visibility—

Dew point46°

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

Mon, 2480° / 56°

80 °

Penngrove, Monday, 24 August

Climate normal for this date — 60-year average.

Average high80°

Average low56°

Average precipitation0 in

Chance of precipitation2%

Record high100° (2010)

Record low51° (1970)

Tue, 2579° / 56°

79 °

Penngrove, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high79°

Average low56°

Average precipitation0 in

Chance of precipitation0%

Record high97° (1988)

Record low50° (1966)

Wed, 2680° / 55°

80 °

Penngrove, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high80°

Average low55°

Average precipitation0 in

Chance of precipitation0%

Record high96° (1988)

Record low50° (1966)

Thu, 2782° / 56°

82 °

Penngrove, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high82°

Average low56°

Average precipitation0 in

Chance of precipitation0%

Record high96° (1962)

Record low50° (2023)

Fri, 2882° / 57°

82 °

Penngrove, Friday, 28 August

Climate normal for this date — 60-year average.

Average high82°

Average low57°

Average precipitation0 in

Chance of precipitation0%

Record high98° (2021)

Record low51° (1985)

Sat, 2981° / 57°

81 °

Penngrove, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high81°

Average low57°

Average precipitation0 in

Chance of precipitation0%

Record high97° (2009)

Record low50° (1985)

Sun, 3081° / 57°

81 °

Penngrove, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high81°

Average low57°

Average precipitation0 in

Chance of precipitation2%

Record high95° (1996)

Record low50° (1971)

Mon, 3181° / 56°

0.01

81 °

Penngrove, Monday, 31 August

Climate normal for this date — 60-year average.

Average high81°

Average low56°

Average precipitation0.01 in

Chance of precipitation3%

Record high92° (1976)

Record low51° (1970)

Tue, 0182° / 56°

82 °

Penngrove, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high82°

Average low56°

Average precipitation0 in

Chance of precipitation2%

Record high104° (2017)

Record low50° (1964)

Wed, 0282° / 56°

82 °

Penngrove, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high82°

Average low56°

Average precipitation0 in

Chance of precipitation2%

Record high105° (2017)

Record low50° (1964)

Thu, 0381° / 56°

81 °

Penngrove, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high81°

Average low56°

Average precipitation0 in

Chance of precipitation0%

Record high95° (2017)

Record low49° (2000)

Fri, 0482° / 56°

82 °

Penngrove, Friday, 4 September

Climate normal for this date — 60-year average.

Average high82°

Average low56°

Average precipitation0 in

Chance of precipitation0%

Record high95° (2022)

Record low48° (2000)

Sat, 0582° / 56°

82 °

Penngrove, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high82°

Average low56°

Average precipitation0 in

Chance of precipitation2%

Record high99° (2022)

Record low50° (1996)

Sun, 0682° / 56°

82 °

Penngrove, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high82°

Average low56°

Average precipitation0 in

Chance of precipitation0%

Record high117° (2022)

Record low51° (1980)

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 Penngrove, 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 Penngrove, 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.