Monthly outlook for Palermo, CA: average high 78.5°, average low 55.2°. That is 3.6° above the climate normal for October. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 3 days and 1.8 inches. The warmest day looks like 16 October (92.3°), the coolest 13 October (45.3°).
78.5°/55.2°
Average high / low
+3.6°
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
78.7°
73.4°
+2.9°
22 October – 31 October
78.1°
68.2°
+5.5°
1 November – 10 November
at normal
63.7°
—
October records over 66 years
98.6°1 October 2024All-time high
33.8°31 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Rackerby (9 mi).
Tue, 1377° / 45°0
77 °
Palermo, Tuesday, 13 October
Clear. High 77°, low 45°.
Pressure30.09 inHg
Wind12.3 mph NW
Humidity23%
Visibility6.2 mi
Dew point27°
Wed, 1482° / 56°0
82 °
Palermo, Wednesday, 14 October
Clear. High 82°, low 56°.
Pressure30.09 inHg
Wind3 mph SW
Humidity22%
Visibility6.2 mi
Dew point28°
Thu, 1592° / 60°0
92 °
Palermo, Thursday, 15 October
Clear. High 92°, low 60°.
Pressure30.09 inHg
Wind11.1 mph NW
Humidity14%
Visibility6.2 mi
Dew point33°
Fri, 1692° / 67°0
92 °
Palermo, Friday, 16 October
Clear. High 92°, low 67°.
Pressure30.00 inHg
Wind9.3 mph NW
Humidity18%
Visibility—
Dew point34°
Sat, 1788° / 65°0
88 °
Palermo, Saturday, 17 October
Clear. High 88°, low 65°.
Pressure29.97 inHg
Wind7.4 mph E
Humidity23%
Visibility—
Dew point37°
Sun, 1881° / 61°0
81 °
Palermo, Sunday, 18 October
Clear. High 81°, low 61°.
Pressure29.97 inHg
Wind5.8 mph E
Humidity26%
Visibility—
Dew point36°
Mon, 1971° / 54°0.02
71 °
Palermo, Monday, 19 October
Light rain. High 71°, low 54°.
Pressure29.97 inHg
Wind12.6 mph SE
Humidity47%
Visibility—
Dew point44°
Tue, 2064° / 50°0.31
64 °
Palermo, Tuesday, 20 October
Light rain. High 64°, low 50°.
Pressure29.97 inHg
Wind8.5 mph SE
Humidity69%
Visibility—
Dew point47°
Wed, 2171° / 46°0
71 °
Palermo, Wednesday, 21 October
Clear. High 71°, low 46°.
Pressure29.88 inHg
Wind10.7 mph NW
Humidity32%
Visibility—
Dew point31°
Thu, 2271° / 47°0
71 °
Palermo, Thursday, 22 October
Clear. High 71°, low 47°.
Pressure30.00 inHg
Wind6.4 mph W
Humidity28%
Visibility—
Dew point28°
Fri, 2369° / 49°0
69 °
Palermo, Friday, 23 October
Clear. High 69°, low 49°.
Pressure30.21 inHg
Wind5.2 mph NW
Humidity30%
Visibility—
Dew point29°
Sat, 2478° / 52°0
78 °
Palermo, Saturday, 24 October
Mostly clear. High 78°, low 52°.
Pressure30.24 inHg
Wind5 mph E
Humidity31%
Visibility—
Dew point33°
Sun, 2588° / 56°0
88 °
Palermo, Sunday, 25 October
Clear. High 88°, low 56°.
Pressure30.09 inHg
Wind9.9 mph NE
Humidity23%
Visibility—
Dew point35°
Mon, 2682° / 59°0
82 °
Palermo, Monday, 26 October
Clear. High 82°, low 59°.
Pressure30.12 inHg
Wind5.2 mph NE
Humidity23%
Visibility—
Dew point34°
Tue, 2780° / 64°0
80 °
Palermo, Tuesday, 27 October
Overcast. High 80°, low 64°.
Pressure30.06 inHg
Wind4.2 mph NE
Humidity24%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2866° / 48°0.18
66 °
Palermo, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high66°
Average low48°
Average precipitation0.18 in
Chance of precipitation18%
Record high82° (2003)
Record low35° (2023)
Thu, 2966° / 48°0.13
66 °
Palermo, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high66°
Average low48°
Average precipitation0.13 in
Chance of precipitation25%
Record high79° (1966)
Record low35° (1971)
Fri, 3066° / 47°0.18
66 °
Palermo, Friday, 30 October
Climate normal for this date — 60-year average.
Average high66°
Average low47°
Average precipitation0.18 in
Chance of precipitation20%
Record high80° (1966)
Record low38° (1971)
Sat, 3166° / 47°0.1
66 °
Palermo, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high66°
Average low47°
Average precipitation0.1 in
Chance of precipitation23%
Record high85° (1966)
Record low34° (1971)
Sun, 0166° / 47°0.14
66 °
Palermo, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high66°
Average low47°
Average precipitation0.14 in
Chance of precipitation22%
Record high82° (1967)
Record low37° (2003)
Mon, 0266° / 47°0.16
66 °
Palermo, Monday, 2 November
Climate normal for this date — 60-year average.
Average high66°
Average low47°
Average precipitation0.16 in
Chance of precipitation17%
Record high82° (1967)
Record low39° (1961)
Tue, 0366° / 47°0.14
66 °
Palermo, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high66°
Average low47°
Average precipitation0.14 in
Chance of precipitation25%
Record high82° (2018)
Record low35° (2022)
Wed, 0465° / 47°0.15
65 °
Palermo, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high65°
Average low47°
Average precipitation0.15 in
Chance of precipitation20%
Record high80° (1976)
Record low35° (2003)
Thu, 0565° / 46°0.17
65 °
Palermo, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high65°
Average low46°
Average precipitation0.17 in
Chance of precipitation22%
Record high80° (1976)
Record low37° (2011)
Fri, 0663° / 47°0.22
63 °
Palermo, Friday, 6 November
Climate normal for this date — 60-year average.
Average high63°
Average low47°
Average precipitation0.22 in
Chance of precipitation32%
Record high77° (1976)
Record low37° (1968)
Sat, 0763° / 46°0.24
63 °
Palermo, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high63°
Average low46°
Average precipitation0.24 in
Chance of precipitation33%
Record high77° (2007)
Record low35° (1963)
Sun, 0862° / 45°0.2
62 °
Palermo, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high62°
Average low45°
Average precipitation0.2 in
Chance of precipitation38%
Record high76° (2019)
Record low36° (2011)
Mon, 0960° / 44°0.2
60 °
Palermo, Monday, 9 November
Climate normal for this date — 60-year average.
Average high60°
Average low44°
Average precipitation0.2 in
Chance of precipitation32%
Record high76° (2025)
Record low31° (1982)
Tue, 1060° / 44°0.24
60 °
Palermo, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high60°
Average low44°
Average precipitation0.24 in
Chance of precipitation37%
Record high76° (1990)
Record low32° (2022)
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 Palermo, 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 Palermo, 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.