Monthly outlook for Walnut Grove, CA: average high 96.3°, average low 60.7°. That is 3.7° 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 22 August (102.5°), the coolest 12 August (58.2°).
96.3°/60.7°
Average high / low
+3.7°
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
95.2°
90.5°
+2.6°
18 August – 27 August
98.1°
88.6°
+5.3°
28 August – 6 September
at normal
89.9°
—
August records over 66 years
110.8°17 August 2020All-time high
51.4°29 August 1980All-time low
Climate normals and records are computed from the nearest reference point — Elk Grove (14 mi).
Sun, 09101° / 65°0
101 °
Walnut Grove, Sunday, 9 August
Clear. High 101°, low 65°.
Pressure29.77 inHg
Wind5.9 mph W
Humidity15%
Visibility6.2 mi
Dew point43°
Mon, 10101° / 61°0
101 °
Walnut Grove, Monday, 10 August
Overcast. High 101°, low 61°.
Pressure29.83 inHg
Wind7 mph W
Humidity17%
Visibility6.2 mi
Dew point43°
Tue, 1199° / 59°0
99 °
Walnut Grove, Tuesday, 11 August
Clear. High 99°, low 59°.
Pressure29.88 inHg
Wind7.4 mph W
Humidity20%
Visibility6.2 mi
Dew point45°
Wed, 1299° / 58°0
99 °
Walnut Grove, Wednesday, 12 August
Clear. High 99°, low 58°.
Pressure29.83 inHg
Wind5.7 mph SW
Humidity22%
Visibility6.2 mi
Dew point47°
Thu, 1393° / 60°0
93 °
Walnut Grove, Thursday, 13 August
Overcast. High 93°, low 60°.
Pressure29.77 inHg
Wind20.5 mph W
Humidity21%
Visibility—
Dew point44°
Fri, 1486° / 62°0
86 °
Walnut Grove, Friday, 14 August
Overcast. High 86°, low 62°.
Pressure29.88 inHg
Wind15.7 mph W
Humidity30%
Visibility—
Dew point48°
Sat, 1590° / 59°0
90 °
Walnut Grove, Saturday, 15 August
Clear. High 90°, low 59°.
Pressure29.94 inHg
Wind17.9 mph W
Humidity25%
Visibility—
Dew point46°
Sun, 1693° / 59°0
93 °
Walnut Grove, Sunday, 16 August
Mostly clear. High 93°, low 59°.
Pressure29.94 inHg
Wind15.4 mph W
Humidity18%
Visibility—
Dew point40°
Mon, 1789° / 62°0
89 °
Walnut Grove, Monday, 17 August
Overcast. High 89°, low 62°.
Pressure30.03 inHg
Wind18.6 mph W
Humidity20%
Visibility—
Dew point40°
Tue, 1898° / 59°0
98 °
Walnut Grove, Tuesday, 18 August
Clear. High 98°, low 59°.
Pressure29.94 inHg
Wind16.5 mph W
Humidity11%
Visibility—
Dew point31°
Wed, 1996° / 60°0
96 °
Walnut Grove, Wednesday, 19 August
Clear. High 96°, low 60°.
Pressure29.88 inHg
Wind16.9 mph W
Humidity15%
Visibility—
Dew point37°
Thu, 2096° / 59°0
96 °
Walnut Grove, Thursday, 20 August
Clear. High 96°, low 59°.
Pressure29.85 inHg
Wind15.3 mph W
Humidity18%
Visibility—
Dew point42°
Fri, 21102° / 60°0
102 °
Walnut Grove, Friday, 21 August
Clear. High 102°, low 60°.
Pressure29.80 inHg
Wind14.5 mph W
Humidity15%
Visibility—
Dew point41°
Sat, 22102° / 63°0
102 °
Walnut Grove, Saturday, 22 August
Overcast. High 102°, low 63°.
Pressure29.77 inHg
Wind16.6 mph W
Humidity15%
Visibility—
Dew point42°
Sun, 2394° / 61°0
94 °
Walnut Grove, Sunday, 23 August
Clear. High 94°, low 61°.
Pressure29.80 inHg
Wind17.6 mph W
Humidity22%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2489° / 60°0
89 °
Walnut Grove, Monday, 24 August
Climate normal for this date — 60-year average.
Average high89°
Average low60°
Average precipitation0 in
Chance of precipitation2%
Record high103° (2010)
Record low52° (1970)
Tue, 2589° / 60°0
89 °
Walnut Grove, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high89°
Average low60°
Average precipitation0 in
Chance of precipitation0%
Record high104° (2010)
Record low54° (2002)
Wed, 2689° / 59°0
89 °
Walnut Grove, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high89°
Average low59°
Average precipitation0 in
Chance of precipitation0%
Record high104° (2017)
Record low54° (1995)
Thu, 2790° / 60°0
90 °
Walnut Grove, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high90°
Average low60°
Average precipitation0 in
Chance of precipitation0%
Record high105° (2017)
Record low53° (2012)
Fri, 2891° / 60°0
91 °
Walnut Grove, Friday, 28 August
Climate normal for this date — 60-year average.
Average high91°
Average low60°
Average precipitation0 in
Chance of precipitation0%
Record high106° (2017)
Record low55° (1960)
Sat, 2990° / 60°0
90 °
Walnut Grove, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high90°
Average low60°
Average precipitation0 in
Chance of precipitation0%
Record high103° (2021)
Record low51° (1980)
Sun, 3089° / 60°0
89 °
Walnut Grove, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high89°
Average low60°
Average precipitation0 in
Chance of precipitation2%
Record high101° (2025)
Record low53° (1966)
Mon, 3190° / 60°0
90 °
Walnut Grove, Monday, 31 August
Climate normal for this date — 60-year average.
Average high90°
Average low60°
Average precipitation0 in
Chance of precipitation0%
Record high102° (2025)
Record low53° (1966)
Tue, 0190° / 60°0
90 °
Walnut Grove, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high90°
Average low60°
Average precipitation0 in
Chance of precipitation3%
Record high109° (2017)
Record low53° (1970)
Wed, 0290° / 60°0.01
90 °
Walnut Grove, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high90°
Average low60°
Average precipitation0.01 in
Chance of precipitation3%
Record high107° (2017)
Record low52° (1960)
Thu, 0390° / 60°0
90 °
Walnut Grove, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high90°
Average low60°
Average precipitation0 in
Chance of precipitation2%
Record high104° (2017)
Record low52° (2000)
Fri, 0490° / 60°0
90 °
Walnut Grove, Friday, 4 September
Climate normal for this date — 60-year average.
Average high90°
Average low60°
Average precipitation0 in
Chance of precipitation0%
Record high107° (2022)
Record low51° (1960)
Sat, 0590° / 60°0
90 °
Walnut Grove, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high90°
Average low60°
Average precipitation0 in
Chance of precipitation2%
Record high115° (2022)
Record low53° (1965)
Sun, 0690° / 60°0
90 °
Walnut Grove, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high90°
Average low60°
Average precipitation0 in
Chance of precipitation2%
Record high117° (2022)
Record low51° (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 Walnut Grove, 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 Walnut Grove, 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.