Monthly outlook for Allendale, CA: average high 82.7°, average low 56.8°. That is 3.3° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 17 October (90.6°), the coolest 11 October (46.8°).
82.7°/56.8°
Average high / low
+3.3°
Above normal
0 / 2
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
80.8°
78°
+1.6°
20 October – 29 October
86°
73.5°
+6.9°
30 October – 8 November
at normal
69.3°
—
October records over 66 years
104.4°1 October 2020All-time high
40.1°28 October 2023All-time low
Climate normals and records are computed from the nearest reference point — Vacaville (6 mi).
Sun, 1172° / 47°0
72 °
Allendale, Sunday, 11 October
Clear. High 72°, low 47°.
Pressure29.50 inHg
Wind8.3 mph N
Humidity20%
Visibility6.2 mi
Dew point27°
Mon, 1271° / 49°0
71 °
Allendale, Monday, 12 October
Clear. High 71°, low 49°.
Pressure29.85 inHg
Wind4.8 mph N
Humidity29%
Visibility0.6 mi
Dew point34°
Tue, 1375° / 54°0
75 °
Allendale, Tuesday, 13 October
Clear. High 75°, low 54°.
Pressure30.00 inHg
Wind9.8 mph N
Humidity22%
Visibility6.2 mi
Dew point23°
Wed, 1480° / 54°0
80 °
Allendale, Wednesday, 14 October
Partly cloudy. High 80°, low 54°.
Pressure30.09 inHg
Wind3.4 mph E
Humidity29%
Visibility—
Dew point34°
Thu, 1584° / 59°0
84 °
Allendale, Thursday, 15 October
Clear. High 84°, low 59°.
Pressure30.09 inHg
Wind6 mph NE
Humidity19%
Visibility—
Dew point27°
Fri, 1690° / 61°0
90 °
Allendale, Friday, 16 October
Clear. High 90°, low 61°.
Pressure30.09 inHg
Wind5.8 mph N
Humidity16%
Visibility—
Dew point28°
Sat, 1791° / 63°0
91 °
Allendale, Saturday, 17 October
Mostly clear. High 91°, low 63°.
Pressure30.03 inHg
Wind5.2 mph SE
Humidity18%
Visibility—
Dew point31°
Sun, 1888° / 62°0
88 °
Allendale, Sunday, 18 October
Overcast. High 88°, low 62°.
Pressure30.00 inHg
Wind6.6 mph SW
Humidity22%
Visibility—
Dew point35°
Mon, 1986° / 58°0
86 °
Allendale, Monday, 19 October
Partly cloudy. High 86°, low 58°.
Pressure30.00 inHg
Wind6.6 mph W
Humidity23%
Visibility—
Dew point34°
Tue, 2088° / 59°0
88 °
Allendale, Tuesday, 20 October
Clear. High 88°, low 59°.
Pressure30.00 inHg
Wind11.1 mph N
Humidity16%
Visibility—
Dew point27°
Wed, 2186° / 61°0
86 °
Allendale, Wednesday, 21 October
Mostly clear. High 86°, low 61°.
Pressure30.00 inHg
Wind8.1 mph N
Humidity16%
Visibility—
Dew point26°
Thu, 2287° / 60°0
87 °
Allendale, Thursday, 22 October
Partly cloudy. High 87°, low 60°.
Pressure29.91 inHg
Wind9.2 mph SW
Humidity17%
Visibility—
Dew point28°
Fri, 2379° / 56°0
79 °
Allendale, Friday, 23 October
Overcast. High 79°, low 56°.
Pressure29.94 inHg
Wind7.5 mph SW
Humidity38%
Visibility—
Dew point44°
Sat, 2485° / 55°0
85 °
Allendale, Saturday, 24 October
Clear. High 85°, low 55°.
Pressure30.06 inHg
Wind5.6 mph N
Humidity26%
Visibility—
Dew point35°
Sun, 2590° / 60°0
90 °
Allendale, Sunday, 25 October
Partly cloudy. High 90°, low 60°.
Pressure30.03 inHg
Wind7.2 mph N
Humidity16%
Visibility—
Dew point28°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2673° / 53°0.05
73 °
Allendale, Monday, 26 October
Climate normal for this date — 60-year average.
Average high73°
Average low53°
Average precipitation0.05 in
Chance of precipitation10%
Record high90° (2003)
Record low45° (1989)
Tue, 2772° / 52°0.02
72 °
Allendale, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high72°
Average low52°
Average precipitation0.02 in
Chance of precipitation10%
Record high89° (2003)
Record low40° (2023)
Wed, 2871° / 51°0.06
71 °
Allendale, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high71°
Average low51°
Average precipitation0.06 in
Chance of precipitation15%
Record high86° (2003)
Record low40° (2023)
Thu, 2971° / 51°0.06
71 °
Allendale, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high71°
Average low51°
Average precipitation0.06 in
Chance of precipitation20%
Record high82° (2011)
Record low41° (1971)
Fri, 3070° / 51°0.06
70 °
Allendale, Friday, 30 October
Climate normal for this date — 60-year average.
Average high70°
Average low51°
Average precipitation0.06 in
Chance of precipitation17%
Record high85° (2015)
Record low41° (1971)
Sat, 3171° / 51°0.02
71 °
Allendale, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high71°
Average low51°
Average precipitation0.02 in
Chance of precipitation13%
Record high85° (1966)
Record low42° (2023)
Sun, 0171° / 51°0.05
71 °
Allendale, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high71°
Average low51°
Average precipitation0.05 in
Chance of precipitation13%
Record high88° (1967)
Record low39° (2019)
Mon, 0271° / 50°0.04
71 °
Allendale, Monday, 2 November
Climate normal for this date — 60-year average.
Average high71°
Average low50°
Average precipitation0.04 in
Chance of precipitation13%
Record high87° (1967)
Record low42° (2003)
Tue, 0370° / 50°0.04
70 °
Allendale, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high70°
Average low50°
Average precipitation0.04 in
Chance of precipitation12%
Record high88° (2018)
Record low38° (2022)
Wed, 0470° / 50°0.03
70 °
Allendale, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high70°
Average low50°
Average precipitation0.03 in
Chance of precipitation10%
Record high82° (1976)
Record low39° (1973)
Thu, 0569° / 50°0.07
69 °
Allendale, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high69°
Average low50°
Average precipitation0.07 in
Chance of precipitation13%
Record high83° (2020)
Record low41° (2017)
Fri, 0668° / 51°0.07
68 °
Allendale, Friday, 6 November
Climate normal for this date — 60-year average.
Average high68°
Average low51°
Average precipitation0.07 in
Chance of precipitation15%
Record high82° (1991)
Record low43° (1972)
Sat, 0768° / 50°0.07
68 °
Allendale, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high68°
Average low50°
Average precipitation0.07 in
Chance of precipitation18%
Record high81° (1991)
Record low41° (1971)
Sun, 0866° / 49°0.06
66 °
Allendale, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high66°
Average low49°
Average precipitation0.06 in
Chance of precipitation15%
Record high80° (1990)
Record low41° (2021)
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 Allendale, 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 Allendale, 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.