Monthly outlook for Allen, CA: average high 54.9°, average low 31.5°. That is 1.3° above the climate normal for October. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 3 days and 1.2 inches. The warmest day looks like 16 October (67°), the coolest 22 October (19.5°).
54.9°/31.5°
Average high / low
+1.3°
Above normal
1 / 3
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
52.8°
53.7°
-0.5°
22 October – 31 October
58.3°
49°
+5.1°
1 November – 10 November
at normal
44.8°
—
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).
Tue, 1350° / 22°0
50 °
Allen, Tuesday, 13 October
Clear. High 50°, low 22°.
Pressure30.06 inHg
Wind11.9 mph E
Humidity49%
Visibility6.2 mi
Dew point12°
Wed, 1463° / 27°0
63 °
Allen, Wednesday, 14 October
Clear. High 63°, low 27°.
Pressure30.12 inHg
Wind5 mph NE
Humidity27%
Visibility6.2 mi
Dew point13°
Thu, 1560° / 42°0
60 °
Allen, Thursday, 15 October
Clear. High 60°, low 42°.
Pressure30.24 inHg
Wind17.5 mph E
Humidity32%
Visibility6.2 mi
Dew point18°
Fri, 1667° / 45°0
67 °
Allen, Friday, 16 October
Clear. High 67°, low 45°.
Pressure30.18 inHg
Wind3.8 mph E
Humidity27%
Visibility6.2 mi
Dew point21°
Sat, 1763° / 44°0
63 °
Allen, Saturday, 17 October
Clear. High 63°, low 44°.
Pressure30.15 inHg
Wind9 mph W
Humidity30%
Visibility—
Dew point27°
Sun, 1861° / 39°0
61 °
Allen, Sunday, 18 October
Clear. High 61°, low 39°.
Pressure30.00 inHg
Wind11 mph SW
Humidity20%
Visibility—
Dew point16°
Mon, 1951° / 27°0
51 °
Allen, Monday, 19 October
Overcast. High 51°, low 27°.
Pressure29.91 inHg
Wind17.2 mph S
Humidity27%
Visibility—
Dew point16°
Tue, 2034° / 25°0.27
34 °
Allen, Tuesday, 20 October
Snow. High 34°, low 25°.
Pressure29.85 inHg
Wind9.7 mph SW
Humidity66%
Visibility—
Dew point23°
Wed, 2140° / 21°0.01
40 °
Allen, Wednesday, 21 October
Light rain. High 40°, low 21°.
Pressure29.83 inHg
Wind7.4 mph NE
Humidity54%
Visibility—
Dew point19°
Thu, 2250° / 19°0
50 °
Allen, Thursday, 22 October
Clear. High 50°, low 19°.
Pressure30.03 inHg
Wind8.9 mph NE
Humidity30%
Visibility—
Dew point11°
Fri, 2360° / 27°0
60 °
Allen, Friday, 23 October
Clear. High 60°, low 27°.
Pressure30.09 inHg
Wind9.6 mph NE
Humidity11%
Visibility—
Dew point0°
Sat, 2456° / 36°0
56 °
Allen, Saturday, 24 October
Overcast. High 56°, low 36°.
Pressure30.18 inHg
Wind9.9 mph W
Humidity13%
Visibility—
Dew point3°
Sun, 2558° / 32°0
58 °
Allen, Sunday, 25 October
Clear. High 58°, low 32°.
Pressure30.06 inHg
Wind10.8 mph NE
Humidity29%
Visibility—
Dew point16°
Mon, 2665° / 34°0
65 °
Allen, Monday, 26 October
Clear. High 65°, low 34°.
Pressure30.09 inHg
Wind9.8 mph NE
Humidity14%
Visibility—
Dew point7°
Tue, 2761° / 40°0
61 °
Allen, Tuesday, 27 October
Overcast. High 61°, low 40°.
Pressure30.09 inHg
Wind9.5 mph W
Humidity16%
Visibility—
Dew point11°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2847° / 29°0.13
47 °
Allen, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high47°
Average low29°
Average precipitation0.13 in
Chance of precipitation23%
Record high70° (2003)
Record low9° (2004)
Thu, 2946° / 28°0.08
46 °
Allen, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high46°
Average low28°
Average precipitation0.08 in
Chance of precipitation27%
Record high63° (1965)
Record low7° (1970)
Fri, 3047° / 27°0.12
47 °
Allen, Friday, 30 October
Climate normal for this date — 60-year average.
Average high47°
Average low27°
Average precipitation0.12 in
Chance of precipitation22%
Record high63° (1966)
Record low8° (1981)
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)
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.