Monthly outlook for Mount Hermon, CA: average high 66.3°, average low 50.5°. That is 0.6° above the climate normal for October. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 2 days and 0.9 inches. The warmest day looks like 25 October (77.2°), the coolest 20 October (40.4°).
66.3°/50.5°
Average high / low
+0.6°
Above normal
2 / 2
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
69.6°
65.7°
+2.1°
29 October – 7 November
61°
64°
-1.7°
8 November – 17 November
at normal
61.3°
—
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, 2069° / 40°0
69 °
Mount Hermon, Tuesday, 20 October
Partly cloudy. High 69°, low 40°.
Pressure29.91 inHg
Wind2.6 mph S
Humidity51%
Visibility6.2 mi
Dew point45°
Wed, 2167° / 48°0.27
67 °
Mount Hermon, Wednesday, 21 October
Heavy rain. High 67°, low 48°.
Pressure29.88 inHg
Wind4.6 mph SE
Humidity49%
Visibility6.2 mi
Dew point47°
Thu, 2265° / 46°0.05
65 °
Mount Hermon, Thursday, 22 October
Light rain. High 65°, low 46°.
Pressure29.97 inHg
Wind3.7 mph W
Humidity65%
Visibility6.2 mi
Dew point52°
Fri, 2369° / 48°0
69 °
Mount Hermon, Friday, 23 October
Clear. High 69°, low 48°.
Pressure30.09 inHg
Wind5.8 mph N
Humidity61%
Visibility—
Dew point48°
Sat, 2470° / 44°0
70 °
Mount Hermon, Saturday, 24 October
Mostly clear. High 70°, low 44°.
Pressure30.06 inHg
Wind4.5 mph E
Humidity30%
Visibility—
Dew point31°
Sun, 2577° / 61°0
77 °
Mount Hermon, Sunday, 25 October
Overcast. High 77°, low 61°.
Pressure30.06 inHg
Wind5 mph NE
Humidity27%
Visibility—
Dew point35°
Mon, 2677° / 61°0
77 °
Mount Hermon, Monday, 26 October
Overcast. High 77°, low 61°.
Pressure29.88 inHg
Wind4.4 mph W
Humidity29%
Visibility—
Dew point38°
Tue, 2769° / 55°0
69 °
Mount Hermon, Tuesday, 27 October
Partly cloudy. High 69°, low 55°.
Pressure29.88 inHg
Wind4.7 mph SW
Humidity55%
Visibility—
Dew point48°
Wed, 2863° / 53°0
63 °
Mount Hermon, Wednesday, 28 October
Partly cloudy. High 63°, low 53°.
Pressure30.00 inHg
Wind5.7 mph SW
Humidity68%
Visibility—
Dew point48°
Thu, 2963° / 53°0
63 °
Mount Hermon, Thursday, 29 October
Overcast. High 63°, low 53°.
Pressure29.97 inHg
Wind5.7 mph SW
Humidity70%
Visibility—
Dew point49°
Fri, 3059° / 51°0
59 °
Mount Hermon, Friday, 30 October
Overcast. High 59°, low 51°.
Pressure29.88 inHg
Wind4.3 mph S
Humidity67%
Visibility—
Dew point46°
Sat, 3166° / 52°0
66 °
Mount Hermon, Saturday, 31 October
Partly cloudy. High 66°, low 52°.
Pressure30.00 inHg
Wind9 mph NW
Humidity49%
Visibility—
Dew point42°
Sun, 0161° / 51°0
61 °
Mount Hermon, Sunday, 1 November
Overcast. High 61°, low 51°.
Pressure30.06 inHg
Wind13.8 mph NW
Humidity65%
Visibility—
Dew point46°
Mon, 0261° / 49°0
61 °
Mount Hermon, Monday, 2 November
Mostly clear. High 61°, low 49°.
Pressure30.15 inHg
Wind6.7 mph W
Humidity67%
Visibility—
Dew point46°
Tue, 0356° / 50°0.04
56 °
Mount Hermon, Tuesday, 3 November
Light rain. High 56°, low 50°.
Pressure30.09 inHg
Wind8.3 mph SE
Humidity77%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Wed, 1161° / 51°0.14
61 °
Mount Hermon, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high61°
Average low51°
Average precipitation0.14 in
Chance of precipitation28%
Record high75° (1990)
Record low41° (2022)
Thu, 1262° / 51°0.1
62 °
Mount Hermon, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high62°
Average low51°
Average precipitation0.1 in
Chance of precipitation17%
Record high73° (2018)
Record low39° (1985)
Fri, 1361° / 51°0.19
61 °
Mount Hermon, Friday, 13 November
Climate normal for this date — 60-year average.
Average high61°
Average low51°
Average precipitation0.19 in
Chance of precipitation27%
Record high74° (2021)
Record low40° (1985)
Sat, 1461° / 51°0.09
61 °
Mount Hermon, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high61°
Average low51°
Average precipitation0.09 in
Chance of precipitation23%
Record high75° (2021)
Record low41° (2022)
Sun, 1562° / 51°0.09
62 °
Mount Hermon, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high62°
Average low51°
Average precipitation0.09 in
Chance of precipitation20%
Record high76° (2008)
Record low40° (2022)
Mon, 1661° / 51°0.14
61 °
Mount Hermon, Monday, 16 November
Climate normal for this date — 60-year average.
Average high61°
Average low51°
Average precipitation0.14 in
Chance of precipitation27%
Record high74° (2008)
Record low40° (2024)
Tue, 1760° / 51°0.17
60 °
Mount Hermon, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high60°
Average low51°
Average precipitation0.17 in
Chance of precipitation30%
Record high76° (2019)
Record low40° (2024)
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.