Monthly outlook for Shell Ridge, CA: average high 79.9°, average low 59.5°. That is 2.5° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 1 days and 0.4 inches. The warmest day looks like 8 October (94.7°), the coolest 12 October (53.1°).
79.9°/59.5°
Average high / low
+2.5°
Above normal
0 / 1
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
77.3°
76.3°
+0.6°
18 October – 27 October
84.2°
73°
+6.2°
28 October – 6 November
at normal
69.1°
—
October records over 66 years
105.3°2 October 2024All-time high
41.5°29 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Contra Costa Centre (2 mi).
Fri, 0980° / 57°0
80 °
Shell Ridge, Friday, 9 October
Clear. High 80°, low 57°.
Pressure29.74 inHg
Wind8.5 mph SW
Humidity45%
Visibility6.2 mi
Dew point55°
Sat, 1065° / 55°0
65 °
Shell Ridge, Saturday, 10 October
Partly cloudy. High 65°, low 55°.
Pressure29.65 inHg
Wind13.8 mph SW
Humidity61%
Visibility6.2 mi
Dew point50°
Sun, 1170° / 54°0
70 °
Shell Ridge, Sunday, 11 October
Partly cloudy. High 70°, low 54°.
Pressure29.53 inHg
Wind1.1 mph N
Humidity47%
Visibility6.2 mi
Dew point45°
Mon, 1275° / 53°0
75 °
Shell Ridge, Monday, 12 October
Clear. High 75°, low 53°.
Pressure29.83 inHg
Wind7.8 mph NE
Humidity45%
Visibility—
Dew point43°
Tue, 1373° / 55°0
73 °
Shell Ridge, Tuesday, 13 October
Clear. High 73°, low 55°.
Pressure29.88 inHg
Wind8.4 mph SW
Humidity49%
Visibility—
Dew point46°
Wed, 1475° / 55°0
75 °
Shell Ridge, Wednesday, 14 October
Clear. High 75°, low 55°.
Pressure29.88 inHg
Wind5 mph S
Humidity50%
Visibility—
Dew point46°
Thu, 1577° / 59°0
77 °
Shell Ridge, Thursday, 15 October
Clear. High 77°, low 59°.
Pressure30.06 inHg
Wind7.8 mph NE
Humidity18%
Visibility—
Dew point22°
Fri, 1680° / 58°0
80 °
Shell Ridge, Friday, 16 October
Clear. High 80°, low 58°.
Pressure30.18 inHg
Wind4.2 mph NE
Humidity18%
Visibility—
Dew point24°
Sat, 1782° / 62°0
82 °
Shell Ridge, Saturday, 17 October
Clear. High 82°, low 62°.
Pressure30.09 inHg
Wind4.3 mph E
Humidity17%
Visibility—
Dew point24°
Sun, 1883° / 63°0
83 °
Shell Ridge, Sunday, 18 October
Overcast. High 83°, low 63°.
Pressure29.94 inHg
Wind2.9 mph E
Humidity18%
Visibility—
Dew point27°
Mon, 1986° / 64°0
86 °
Shell Ridge, Monday, 19 October
Partly cloudy. High 86°, low 64°.
Pressure29.97 inHg
Wind3.1 mph NE
Humidity15%
Visibility—
Dew point25°
Tue, 2086° / 65°0
86 °
Shell Ridge, Tuesday, 20 October
Clear. High 86°, low 65°.
Pressure29.97 inHg
Wind4 mph W
Humidity14%
Visibility—
Dew point24°
Wed, 2188° / 65°0
88 °
Shell Ridge, Wednesday, 21 October
Overcast. High 88°, low 65°.
Pressure30.00 inHg
Wind3.2 mph SW
Humidity16%
Visibility—
Dew point27°
Thu, 2288° / 66°0
88 °
Shell Ridge, Thursday, 22 October
Overcast. High 88°, low 66°.
Pressure29.91 inHg
Wind4.1 mph E
Humidity18%
Visibility—
Dew point30°
Fri, 2375° / 64°0
75 °
Shell Ridge, Friday, 23 October
Clear. High 75°, low 64°.
Pressure29.88 inHg
Wind6.9 mph NE
Humidity14%
Visibility—
Dew point22°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2473° / 54°0.09
73 °
Shell Ridge, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high73°
Average low54°
Average precipitation0.09 in
Chance of precipitation13%
Record high87° (2019)
Record low43° (1971)
Sun, 2572° / 54°0.06
72 °
Shell Ridge, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high72°
Average low54°
Average precipitation0.06 in
Chance of precipitation13%
Record high87° (2003)
Record low46° (1975)
Mon, 2672° / 52°0.05
72 °
Shell Ridge, Monday, 26 October
Climate normal for this date — 60-year average.
Average high72°
Average low52°
Average precipitation0.05 in
Chance of precipitation10%
Record high87° (2003)
Record low44° (1970)
Tue, 2771° / 52°0.02
71 °
Shell Ridge, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high71°
Average low52°
Average precipitation0.02 in
Chance of precipitation5%
Record high86° (2003)
Record low45° (2023)
Wed, 2870° / 52°0.06
70 °
Shell Ridge, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high70°
Average low52°
Average precipitation0.06 in
Chance of precipitation15%
Record high86° (2003)
Record low42° (2004)
Thu, 2969° / 51°0.06
69 °
Shell Ridge, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high69°
Average low51°
Average precipitation0.06 in
Chance of precipitation18%
Record high82° (1965)
Record low42° (1971)
Fri, 3069° / 51°0.06
69 °
Shell Ridge, Friday, 30 October
Climate normal for this date — 60-year average.
Average high69°
Average low51°
Average precipitation0.06 in
Chance of precipitation15%
Record high82° (1966)
Record low42° (1971)
Sat, 3170° / 51°0.02
70 °
Shell Ridge, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high70°
Average low51°
Average precipitation0.02 in
Chance of precipitation15%
Record high82° (1966)
Record low42° (2023)
Sun, 0170° / 51°0.04
70 °
Shell Ridge, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high70°
Average low51°
Average precipitation0.04 in
Chance of precipitation12%
Record high85° (1967)
Record low42° (2003)
Mon, 0270° / 51°0.03
70 °
Shell Ridge, Monday, 2 November
Climate normal for this date — 60-year average.
Average high70°
Average low51°
Average precipitation0.03 in
Chance of precipitation13%
Record high85° (1967)
Record low43° (2003)
Tue, 0370° / 51°0.03
70 °
Shell Ridge, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high70°
Average low51°
Average precipitation0.03 in
Chance of precipitation13%
Record high83° (2018)
Record low43° (2022)
Wed, 0469° / 51°0.02
69 °
Shell Ridge, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high69°
Average low51°
Average precipitation0.02 in
Chance of precipitation10%
Record high81° (1980)
Record low40° (1973)
Thu, 0568° / 51°0.05
68 °
Shell Ridge, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high68°
Average low51°
Average precipitation0.05 in
Chance of precipitation13%
Record high83° (2020)
Record low43° (1996)
Fri, 0667° / 51°0.04
67 °
Shell Ridge, Friday, 6 November
Climate normal for this date — 60-year average.
Average high67°
Average low51°
Average precipitation0.04 in
Chance of precipitation15%
Record high80° (1976)
Record low44° (1972)
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 Shell Ridge, 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 Shell Ridge, 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.