Monthly outlook for Deer Park, CA: average high 66.6°, average low 46.4°. That is 2.4° below the climate normal for October. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 3 days and 1.3 inches. The warmest day looks like 24 October (72.8°), the coolest 26 October (41.7°).
66.6°/46.4°
Average high / low
−2.4°
Below normal
3 / 3
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
69°
72°
-1.7°
3 November – 12 November
62.5°
67.6°
-2.8°
13 November – 22 November
at normal
63.4°
—
October records over 66 years
106°1 October 2020All-time high
39.7°29 October 1971All-time low
Climate normals and records are computed from the nearest reference point — St. Helena (2 mi).
Sun, 2571° / 43°0
71 °
Deer Park, Sunday, 25 October
Overcast. High 71°, low 43°.
Pressure30.06 inHg
Wind1.7 mph E
Humidity34%
Visibility6.2 mi
Dew point38°
Mon, 2667° / 42°0
67 °
Deer Park, Monday, 26 October
Mostly clear. High 67°, low 42°.
Pressure30.15 inHg
Wind5.5 mph W
Humidity57%
Visibility6.2 mi
Dew point47°
Tue, 2767° / 42°0
67 °
Deer Park, Tuesday, 27 October
Overcast. High 67°, low 42°.
Pressure30.03 inHg
Wind1.1 mph S
Humidity43%
Visibility6.2 mi
Dew point41°
Wed, 2870° / 44°0
70 °
Deer Park, Wednesday, 28 October
Overcast. High 70°, low 44°.
Pressure29.97 inHg
Wind5.2 mph SW
Humidity39%
Visibility—
Dew point37°
Thu, 2965° / 45°0
65 °
Deer Park, Thursday, 29 October
Overcast. High 65°, low 45°.
Pressure29.91 inHg
Wind9.2 mph W
Humidity49%
Visibility—
Dew point38°
Fri, 3066° / 42°0
66 °
Deer Park, Friday, 30 October
Clear. High 66°, low 42°.
Pressure29.97 inHg
Wind4.1 mph NW
Humidity43%
Visibility—
Dew point35°
Sat, 3168° / 44°0
68 °
Deer Park, Saturday, 31 October
Clear. High 68°, low 44°.
Pressure30.09 inHg
Wind4.4 mph W
Humidity20%
Visibility—
Dew point19°
Sun, 0173° / 46°0
73 °
Deer Park, Sunday, 1 November
Clear. High 73°, low 46°.
Pressure30.21 inHg
Wind4.9 mph NE
Humidity16%
Visibility—
Dew point17°
Mon, 0271° / 54°0
71 °
Deer Park, Monday, 2 November
Overcast. High 71°, low 54°.
Pressure30.12 inHg
Wind4.4 mph W
Humidity22%
Visibility—
Dew point26°
Tue, 0371° / 50°0
71 °
Deer Park, Tuesday, 3 November
Overcast. High 71°, low 50°.
Pressure30.18 inHg
Wind6.5 mph SW
Humidity27%
Visibility—
Dew point29°
Wed, 0460° / 49°0.02
60 °
Deer Park, Wednesday, 4 November
Light rain. High 60°, low 49°.
Pressure29.97 inHg
Wind3.1 mph SW
Humidity67%
Visibility—
Dew point47°
Thu, 0558° / 51°0.65
58 °
Deer Park, Thursday, 5 November
Rain. High 58°, low 51°.
Pressure29.91 inHg
Wind8.7 mph S
Humidity81%
Visibility—
Dew point52°
Fri, 0663° / 48°0.16
63 °
Deer Park, Friday, 6 November
Light rain. High 63°, low 48°.
Pressure30.03 inHg
Wind8.7 mph SW
Humidity76%
Visibility—
Dew point51°
Sat, 0766° / 46°0
66 °
Deer Park, Saturday, 7 November
Mostly clear. High 66°, low 46°.
Pressure30.09 inHg
Wind5.3 mph S
Humidity49%
Visibility—
Dew point40°
Sun, 0856° / 48°0.24
56 °
Deer Park, Sunday, 8 November
Rain. High 56°, low 48°.
Pressure29.97 inHg
Wind6.3 mph SE
Humidity91%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0966° / 48°0.12
66 °
Deer Park, Monday, 9 November
Climate normal for this date — 60-year average.
Average high66°
Average low48°
Average precipitation0.12 in
Chance of precipitation23%
Record high81° (1990)
Record low39° (2020)
Tue, 1065° / 48°0.19
65 °
Deer Park, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high65°
Average low48°
Average precipitation0.19 in
Chance of precipitation30%
Record high83° (2019)
Record low37° (2022)
Wed, 1165° / 48°0.13
65 °
Deer Park, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high65°
Average low48°
Average precipitation0.13 in
Chance of precipitation27%
Record high86° (2019)
Record low37° (2000)
Thu, 1266° / 48°0.09
66 °
Deer Park, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high66°
Average low48°
Average precipitation0.09 in
Chance of precipitation23%
Record high80° (1990)
Record low33° (1985)
Fri, 1365° / 48°0.19
65 °
Deer Park, Friday, 13 November
Climate normal for this date — 60-year average.
Average high65°
Average low48°
Average precipitation0.19 in
Chance of precipitation30%
Record high82° (1995)
Record low35° (1985)
Sat, 1465° / 48°0.07
65 °
Deer Park, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high65°
Average low48°
Average precipitation0.07 in
Chance of precipitation22%
Record high82° (2008)
Record low35° (1978)
Sun, 1565° / 48°0.11
65 °
Deer Park, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high65°
Average low48°
Average precipitation0.11 in
Chance of precipitation25%
Record high81° (2008)
Record low35° (2000)
Mon, 1664° / 48°0.15
64 °
Deer Park, Monday, 16 November
Climate normal for this date — 60-year average.
Average high64°
Average low48°
Average precipitation0.15 in
Chance of precipitation32%
Record high80° (2019)
Record low35° (2000)
Tue, 1764° / 47°0.15
64 °
Deer Park, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high64°
Average low47°
Average precipitation0.15 in
Chance of precipitation23%
Record high83° (2019)
Record low35° (1964)
Wed, 1863° / 46°0.11
63 °
Deer Park, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high63°
Average low46°
Average precipitation0.11 in
Chance of precipitation27%
Record high80° (2019)
Record low37° (1985)
Thu, 1962° / 46°0.12
62 °
Deer Park, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high62°
Average low46°
Average precipitation0.12 in
Chance of precipitation25%
Record high77° (2005)
Record low34° (1994)
Fri, 2062° / 46°0.15
62 °
Deer Park, Friday, 20 November
Climate normal for this date — 60-year average.
Average high62°
Average low46°
Average precipitation0.15 in
Chance of precipitation35%
Record high75° (2002)
Record low35° (1964)
Sat, 2161° / 46°0.18
61 °
Deer Park, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high61°
Average low46°
Average precipitation0.18 in
Chance of precipitation30%
Record high73° (2002)
Record low35° (1985)
Sun, 2262° / 45°0.15
62 °
Deer Park, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high62°
Average low45°
Average precipitation0.15 in
Chance of precipitation28%
Record high73° (1976)
Record low35° (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 Deer Park, 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 Deer Park, 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.