Monthly outlook for Mount Hermon, CA: average high 74.1°, average low 54.2°. That is 4.2° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 2 days and 0.8 inches. The warmest day looks like 16 October (88°), the coolest 12 October (45.3°).
74.1°/54.2°
Average high / low
+4.2°
Above normal
0 / 2
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
76.4°
67°
+5.2°
22 October – 31 October
70.2°
65.2°
+2.8°
1 November – 10 November
at normal
63.2°
—
October records over 66 years
96.8°6 October 2024All-time high
41.5°29 October 2023All-time low
Climate normals and records are computed from the nearest reference point — Santa Cruz (5 mi).
Tue, 1374° / 46°0
74 °
Mount Hermon, Tuesday, 13 October
Clear. High 74°, low 46°.
Pressure30.06 inHg
Wind7 mph N
Humidity22%
Visibility6.2 mi
Dew point25°
Wed, 1478° / 49°0
78 °
Mount Hermon, Wednesday, 14 October
Clear. High 78°, low 49°.
Pressure30.09 inHg
Wind1.5 mph SW
Humidity25%
Visibility6.2 mi
Dew point37°
Thu, 1584° / 54°0
84 °
Mount Hermon, Thursday, 15 October
Clear. High 84°, low 54°.
Pressure30.06 inHg
Wind0.6 mph SE
Humidity19%
Visibility6.2 mi
Dew point35°
Fri, 1688° / 60°0
88 °
Mount Hermon, Friday, 16 October
Clear. High 88°, low 60°.
Pressure30.00 inHg
Wind2.6 mph NE
Humidity16%
Visibility—
Dew point31°
Sat, 1783° / 62°0
83 °
Mount Hermon, Saturday, 17 October
Clear. High 83°, low 62°.
Pressure29.97 inHg
Wind7.9 mph NW
Humidity25%
Visibility—
Dew point38°
Sun, 1877° / 57°0
77 °
Mount Hermon, Sunday, 18 October
Clear. High 77°, low 57°.
Pressure30.03 inHg
Wind6.2 mph W
Humidity40%
Visibility—
Dew point46°
Mon, 1969° / 52°0
69 °
Mount Hermon, Monday, 19 October
Mostly clear. High 69°, low 52°.
Pressure30.09 inHg
Wind13.3 mph NW
Humidity57%
Visibility—
Dew point48°
Tue, 2068° / 49°0
68 °
Mount Hermon, Tuesday, 20 October
Clear. High 68°, low 49°.
Pressure30.06 inHg
Wind7.3 mph N
Humidity41%
Visibility—
Dew point37°
Wed, 2174° / 54°0
74 °
Mount Hermon, Wednesday, 21 October
Clear. High 74°, low 54°.
Pressure30.06 inHg
Wind4.7 mph NE
Humidity24%
Visibility—
Dew point29°
Thu, 2279° / 60°0
79 °
Mount Hermon, Thursday, 22 October
Clear. High 79°, low 60°.
Pressure30.00 inHg
Wind4.6 mph W
Humidity21%
Visibility—
Dew point30°
Fri, 2375° / 57°0
75 °
Mount Hermon, Friday, 23 October
Overcast. High 75°, low 57°.
Pressure29.85 inHg
Wind4.9 mph W
Humidity35%
Visibility—
Dew point39°
Sat, 2466° / 54°0
66 °
Mount Hermon, Saturday, 24 October
Overcast. High 66°, low 54°.
Pressure29.80 inHg
Wind5.7 mph SW
Humidity62%
Visibility—
Dew point48°
Sun, 2570° / 53°0
70 °
Mount Hermon, Sunday, 25 October
Overcast. High 70°, low 53°.
Pressure29.85 inHg
Wind4.9 mph W
Humidity50%
Visibility—
Dew point45°
Mon, 2669° / 57°0
69 °
Mount Hermon, Monday, 26 October
Overcast. High 69°, low 57°.
Pressure29.80 inHg
Wind4.9 mph SW
Humidity41%
Visibility—
Dew point42°
Tue, 2763° / 56°0
63 °
Mount Hermon, Tuesday, 27 October
Overcast. High 63°, low 56°.
Pressure29.85 inHg
Wind4.9 mph SE
Humidity67%
Visibility—
Dew point51°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2864° / 53°0.07
64 °
Mount Hermon, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high64°
Average low53°
Average precipitation0.07 in
Chance of precipitation13%
Record high75° (2025)
Record low43° (2023)
Thu, 2964° / 53°0.07
64 °
Mount Hermon, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high64°
Average low53°
Average precipitation0.07 in
Chance of precipitation17%
Record high79° (2025)
Record low42° (2023)
Fri, 3064° / 52°0.07
64 °
Mount Hermon, Friday, 30 October
Climate normal for this date — 60-year average.
Average high64°
Average low52°
Average precipitation0.07 in
Chance of precipitation15%
Record high79° (1966)
Record low43° (1971)
Sat, 3165° / 53°0.02
65 °
Mount Hermon, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high65°
Average low53°
Average precipitation0.02 in
Chance of precipitation12%
Record high80° (2020)
Record low46° (2023)
Sun, 0165° / 53°0.06
65 °
Mount Hermon, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high65°
Average low53°
Average precipitation0.06 in
Chance of precipitation13%
Record high84° (2020)
Record low43° (2024)
Mon, 0265° / 53°0.05
65 °
Mount Hermon, Monday, 2 November
Climate normal for this date — 60-year average.
Average high65°
Average low53°
Average precipitation0.05 in
Chance of precipitation15%
Record high81° (1997)
Record low45° (2003)
Tue, 0365° / 53°0.04
65 °
Mount Hermon, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high65°
Average low53°
Average precipitation0.04 in
Chance of precipitation13%
Record high82° (2018)
Record low42° (2022)
Wed, 0464° / 53°0.04
64 °
Mount Hermon, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high64°
Average low53°
Average precipitation0.04 in
Chance of precipitation12%
Record high80° (1976)
Record low43° (2011)
Thu, 0563° / 53°0.07
63 °
Mount Hermon, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high63°
Average low53°
Average precipitation0.07 in
Chance of precipitation15%
Record high80° (2020)
Record low46° (2024)
Fri, 0663° / 53°0.07
63 °
Mount Hermon, Friday, 6 November
Climate normal for this date — 60-year average.
Average high63°
Average low53°
Average precipitation0.07 in
Chance of precipitation15%
Record high73° (2018)
Record low46° (2017)
Sat, 0763° / 52°0.1
63 °
Mount Hermon, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high63°
Average low52°
Average precipitation0.1 in
Chance of precipitation28%
Record high74° (1991)
Record low44° (2017)
Sun, 0862° / 52°0.13
62 °
Mount Hermon, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high62°
Average low52°
Average precipitation0.13 in
Chance of precipitation20%
Record high75° (2025)
Record low44° (2011)
Mon, 0961° / 51°0.08
61 °
Mount Hermon, Monday, 9 November
Climate normal for this date — 60-year average.
Average high61°
Average low51°
Average precipitation0.08 in
Chance of precipitation25%
Record high76° (2025)
Record low37° (2020)
Tue, 1062° / 51°0.09
62 °
Mount Hermon, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high62°
Average low51°
Average precipitation0.09 in
Chance of precipitation23%
Record high76° (2025)
Record low39° (1994)
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 Mount Hermon, 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 Mount Hermon, 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.