Monthly outlook for Allen, CA: average high 47.2°, average low 27.2°. That is 2.2° below the climate normal for October. Precipitation is expected on 2 days (about 0.6 inches), against a normal of 3 days and 1.4 inches. The warmest day looks like 16 October (65°), the coolest 26 October (12.7°).
47.2°/27.2°
Average high / low
−2.2°
Below normal
2 / 3
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
55.7°
52.8°
+1.6°
25 October – 3 November
33°
47.6°
-8.2°
4 November – 13 November
at normal
43.2°
—
October records over 66 years
77°1 October 1980All-time high
6.1°18 October 1984All-time low
Climate normals and records are computed from the nearest reference point — Kirkwood (6 mi).
Fri, 1665° / 31°0
65 °
Allen, Friday, 16 October
Clear. High 65°, low 31°.
Pressure30.24 inHg
Wind8.6 mph E
Humidity24%
Visibility6.2 mi
Dew point18°
Sat, 1764° / 44°0
64 °
Allen, Saturday, 17 October
Clear. High 64°, low 44°.
Pressure30.18 inHg
Wind7.8 mph NW
Humidity27%
Visibility6.2 mi
Dew point19°
Sun, 1860° / 41°0
60 °
Allen, Sunday, 18 October
Clear. High 60°, low 41°.
Pressure30.06 inHg
Wind10 mph SW
Humidity31%
Visibility6.2 mi
Dew point23°
Mon, 1955° / 40°0
55 °
Allen, Monday, 19 October
Overcast. High 55°, low 40°.
Pressure29.94 inHg
Wind14.9 mph S
Humidity38%
Visibility—
Dew point28°
Tue, 2052° / 37°0.03
52 °
Allen, Tuesday, 20 October
Light rain. High 52°, low 37°.
Pressure29.88 inHg
Wind12.2 mph S
Humidity42%
Visibility—
Dew point26°
Wed, 2140° / 26°0.01
40 °
Allen, Wednesday, 21 October
Snow. High 40°, low 26°.
Pressure29.85 inHg
Wind9.6 mph W
Humidity62%
Visibility—
Dew point24°
Thu, 2252° / 25°0
52 °
Allen, Thursday, 22 October
Clear. High 52°, low 25°.
Pressure30.03 inHg
Wind7.3 mph NW
Humidity40%
Visibility—
Dew point20°
Fri, 2355° / 33°0
55 °
Allen, Friday, 23 October
Clear. High 55°, low 33°.
Pressure30.15 inHg
Wind10.2 mph W
Humidity26%
Visibility—
Dew point16°
Sat, 2451° / 29°0
51 °
Allen, Saturday, 24 October
Clear. High 51°, low 29°.
Pressure30.06 inHg
Wind13.9 mph SW
Humidity23%
Visibility—
Dew point12°
Sun, 2529° / 17°0.08
29 °
Allen, Sunday, 25 October
Light snow. High 29°, low 17°.
Pressure29.88 inHg
Wind12.7 mph SW
Humidity58%
Visibility—
Dew point14°
Mon, 2623° / 13°0.47
23 °
Allen, Monday, 26 October
Snow. High 23°, low 13°.
Pressure29.91 inHg
Wind7.1 mph SW
Humidity87%
Visibility—
Dew point19°
Tue, 2729° / 13°0.01
29 °
Allen, Tuesday, 27 October
Light snow. High 29°, low 13°.
Pressure30.12 inHg
Wind5.8 mph W
Humidity79%
Visibility—
Dew point20°
Wed, 2835° / 18°0.01
35 °
Allen, Wednesday, 28 October
Light rain. High 35°, low 18°.
Pressure30.06 inHg
Wind4.9 mph W
Humidity91%
Visibility—
Dew point31°
Thu, 2939° / 21°0
39 °
Allen, Thursday, 29 October
Overcast. High 39°, low 21°.
Pressure30.12 inHg
Wind8.6 mph E
Humidity66%
Visibility—
Dew point23°
Fri, 3042° / 20°0
42 °
Allen, Friday, 30 October
Clear. High 42°, low 20°.
Pressure30.18 inHg
Wind7.2 mph E
Humidity49%
Visibility—
Dew point19°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3147° / 28°0.04
47 °
Allen, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high47°
Average low28°
Average precipitation0.04 in
Chance of precipitation20%
Record high64° (2020)
Record low8° (1989)
Sun, 0147° / 28°0.07
47 °
Allen, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high47°
Average low28°
Average precipitation0.07 in
Chance of precipitation25%
Record high65° (1966)
Record low11° (2000)
Mon, 0247° / 27°0.07
47 °
Allen, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low27°
Average precipitation0.07 in
Chance of precipitation18%
Record high64° (2020)
Record low14° (1975)
Tue, 0347° / 27°0.07
47 °
Allen, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high47°
Average low27°
Average precipitation0.07 in
Chance of precipitation23%
Record high64° (2010)
Record low8° (2022)
Wed, 0447° / 27°0.07
47 °
Allen, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high47°
Average low27°
Average precipitation0.07 in
Chance of precipitation17%
Record high64° (1980)
Record low5° (2015)
Thu, 0546° / 27°0.1
46 °
Allen, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high46°
Average low27°
Average precipitation0.1 in
Chance of precipitation17%
Record high64° (2020)
Record low5° (2015)
Fri, 0644° / 26°0.11
44 °
Allen, Friday, 6 November
Climate normal for this date — 60-year average.
Average high44°
Average low26°
Average precipitation0.11 in
Chance of precipitation27%
Record high60° (1976)
Record low8° (1972)
Sat, 0744° / 26°0.11
44 °
Allen, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high44°
Average low26°
Average precipitation0.11 in
Chance of precipitation33%
Record high60° (1978)
Record low9° (2015)
Sun, 0843° / 24°0.17
43 °
Allen, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high43°
Average low24°
Average precipitation0.17 in
Chance of precipitation33%
Record high61° (1978)
Record low5° (2011)
Mon, 0942° / 23°0.13
42 °
Allen, Monday, 9 November
Climate normal for this date — 60-year average.
Average high42°
Average low23°
Average precipitation0.13 in
Chance of precipitation37%
Record high60° (2025)
Record low2° (2020)
Tue, 1042° / 24°0.15
42 °
Allen, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high42°
Average low24°
Average precipitation0.15 in
Chance of precipitation33%
Record high60° (1990)
Record low7° (2012)
Wed, 1142° / 23°0.15
42 °
Allen, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high42°
Average low23°
Average precipitation0.15 in
Chance of precipitation33%
Record high58° (1990)
Record low0° (2000)
Thu, 1242° / 24°0.13
42 °
Allen, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high42°
Average low24°
Average precipitation0.13 in
Chance of precipitation28%
Record high58° (2019)
Record low1° (2000)
Fri, 1341° / 23°0.19
41 °
Allen, Friday, 13 November
Climate normal for this date — 60-year average.
Average high41°
Average low23°
Average precipitation0.19 in
Chance of precipitation30%
Record high62° (1995)
Record low-2° (1985)
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 Allen, 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 Allen, 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.