Monthly outlook for Lake Arrowhead, CA: average high 61.2°, average low 46.1°. That is 7.9° below the climate normal for October. Precipitation is expected on 2 days (about 1.1 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 27 October (68.9°), the coolest 22 October (38.3°).
61.2°/46.1°
Average high / low
−7.9°
Below normal
2 / 1
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
61.1°
76°
-8.3°
31 October – 9 November
61.3°
73.1°
-6.6°
10 November – 19 November
at normal
69.2°
—
October records over 66 years
105.6°2 October 2024All-time high
30.6°30 October 1971All-time low
Climate normals and records are computed from the nearest reference point — San Bernardino (10 mi).
Thu, 2248° / 38°1.04
48 °
Lake Arrowhead, Thursday, 22 October
Heavy rain. High 48°, low 38°.
Pressure29.97 inHg
Wind10.2 mph S
Humidity86%
Visibility6.2 mi
Dew point46°
Fri, 2357° / 42°0
57 °
Lake Arrowhead, Friday, 23 October
Clear. High 57°, low 42°.
Pressure29.97 inHg
Wind4.4 mph NW
Humidity56%
Visibility6.2 mi
Dew point40°
Sat, 2461° / 45°0
61 °
Lake Arrowhead, Saturday, 24 October
Clear. High 61°, low 45°.
Pressure30.00 inHg
Wind10.2 mph N
Humidity50%
Visibility6.2 mi
Dew point41°
Sun, 2565° / 46°0
65 °
Lake Arrowhead, Sunday, 25 October
Clear. High 65°, low 46°.
Pressure30.09 inHg
Wind5.9 mph N
Humidity43%
Visibility—
Dew point37°
Mon, 2666° / 46°0
66 °
Lake Arrowhead, Monday, 26 October
Partly cloudy. High 66°, low 46°.
Pressure30.12 inHg
Wind6.5 mph N
Humidity41%
Visibility—
Dew point37°
Tue, 2769° / 51°0
69 °
Lake Arrowhead, Tuesday, 27 October
Overcast. High 69°, low 51°.
Pressure30.03 inHg
Wind5.4 mph SW
Humidity22%
Visibility—
Dew point24°
Wed, 2865° / 51°0
65 °
Lake Arrowhead, Wednesday, 28 October
Overcast. High 65°, low 51°.
Pressure29.91 inHg
Wind9.5 mph SW
Humidity25%
Visibility—
Dew point26°
Thu, 2962° / 50°0
62 °
Lake Arrowhead, Thursday, 29 October
Overcast. High 62°, low 50°.
Pressure29.91 inHg
Wind8.3 mph S
Humidity28%
Visibility—
Dew point26°
Fri, 3057° / 45°0
57 °
Lake Arrowhead, Friday, 30 October
Clear. High 57°, low 45°.
Pressure29.88 inHg
Wind9 mph S
Humidity45%
Visibility—
Dew point33°
Sat, 3154° / 43°0
54 °
Lake Arrowhead, Saturday, 31 October
Overcast. High 54°, low 43°.
Pressure29.91 inHg
Wind8.2 mph S
Humidity63%
Visibility—
Dew point37°
Sun, 0164° / 43°0
64 °
Lake Arrowhead, Sunday, 1 November
Overcast. High 64°, low 43°.
Pressure30.03 inHg
Wind6.9 mph W
Humidity18%
Visibility—
Dew point15°
Mon, 0263° / 50°0
63 °
Lake Arrowhead, Monday, 2 November
Overcast. High 63°, low 50°.
Pressure30.09 inHg
Wind8.7 mph SW
Humidity25%
Visibility—
Dew point24°
Tue, 0361° / 48°0
61 °
Lake Arrowhead, Tuesday, 3 November
Overcast. High 61°, low 48°.
Pressure30.00 inHg
Wind6.1 mph NE
Humidity25%
Visibility—
Dew point23°
Wed, 0465° / 45°0
65 °
Lake Arrowhead, Wednesday, 4 November
Clear. High 65°, low 45°.
Pressure29.91 inHg
Wind8.5 mph NE
Humidity25%
Visibility—
Dew point23°
Thu, 0559° / 46°0
59 °
Lake Arrowhead, Thursday, 5 November
Mostly clear. High 59°, low 46°.
Pressure29.88 inHg
Wind8.4 mph S
Humidity43%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0672° / 49°0.01
72 °
Lake Arrowhead, Friday, 6 November
Climate normal for this date — 60-year average.
Average high72°
Average low49°
Average precipitation0.01 in
Chance of precipitation5%
Record high88° (1991)
Record low40° (2015)
Sat, 0771° / 49°0.05
71 °
Lake Arrowhead, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high71°
Average low49°
Average precipitation0.05 in
Chance of precipitation7%
Record high90° (2006)
Record low35° (2011)
Sun, 0871° / 49°0.06
71 °
Lake Arrowhead, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high71°
Average low49°
Average precipitation0.06 in
Chance of precipitation17%
Record high89° (2016)
Record low35° (2011)
Mon, 0970° / 48°0.04
70 °
Lake Arrowhead, Monday, 9 November
Climate normal for this date — 60-year average.
Average high70°
Average low48°
Average precipitation0.04 in
Chance of precipitation12%
Record high89° (2025)
Record low35° (2020)
Tue, 1070° / 48°0.02
70 °
Lake Arrowhead, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high70°
Average low48°
Average precipitation0.02 in
Chance of precipitation15%
Record high91° (2025)
Record low37° (2020)
Wed, 1170° / 47°0.05
70 °
Lake Arrowhead, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high70°
Average low47°
Average precipitation0.05 in
Chance of precipitation10%
Record high87° (2021)
Record low35° (2012)
Thu, 1270° / 47°0.02
70 °
Lake Arrowhead, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high70°
Average low47°
Average precipitation0.02 in
Chance of precipitation12%
Record high89° (2021)
Record low32° (2000)
Fri, 1370° / 46°0.02
70 °
Lake Arrowhead, Friday, 13 November
Climate normal for this date — 60-year average.
Average high70°
Average low46°
Average precipitation0.02 in
Chance of precipitation12%
Record high89° (2021)
Record low31° (1985)
Sat, 1470° / 47°0.04
70 °
Lake Arrowhead, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high70°
Average low47°
Average precipitation0.04 in
Chance of precipitation12%
Record high90° (2021)
Record low33° (1964)
Sun, 1569° / 46°0.07
69 °
Lake Arrowhead, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high69°
Average low46°
Average precipitation0.07 in
Chance of precipitation8%
Record high85° (2021)
Record low30° (1964)
Mon, 1668° / 47°0.05
68 °
Lake Arrowhead, Monday, 16 November
Climate normal for this date — 60-year average.
Average high68°
Average low47°
Average precipitation0.05 in
Chance of precipitation13%
Record high86° (2019)
Record low32° (2000)
Tue, 1768° / 47°0.02
68 °
Lake Arrowhead, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high68°
Average low47°
Average precipitation0.02 in
Chance of precipitation8%
Record high86° (2008)
Record low33° (2000)
Wed, 1868° / 45°0.06
68 °
Lake Arrowhead, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high68°
Average low45°
Average precipitation0.06 in
Chance of precipitation12%
Record high88° (2019)
Record low27° (1964)
Thu, 1968° / 45°0.03
68 °
Lake Arrowhead, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high68°
Average low45°
Average precipitation0.03 in
Chance of precipitation7%
Record high84° (2006)
Record low17° (1964)
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 Lake Arrowhead, 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 Lake Arrowhead, 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.