As of 21:10 PDT

Weather in Diablo, CA

66°Current weather

Diablo, Saturday, 17 October, 21:10

Clear. Feels like 65°. High 88°, low 53°.

Pressure29.94 inHg
Wind3.4 mph SE
Humidity39%
Visibility6.2 mi
Dew point42°

Monthly outlook for Diablo, CA: average high 70.5°, average low 52.3°. That is 0.7° below the climate normal for October. Precipitation is expected on 2 days (about 0.7 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 17 October (87.7°), the coolest 19 October (41.9°).

70.5°/52.3°
Average high / low
−0.7°
Below normal
2 / 2
Wet days / normal
0.7 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
17 October – 26 October72.7°73.1°-0.2°
27 October – 5 November66.8°69.1°-1.3°
6 November – 15 Novemberat normal65.1°—

October records over 66 years

104.2°2 October 2024All-time high
41.2°29 October 1971All-time low

Climate normals and records are computed from the nearest reference point — Saranap (7 mi).

Sun, 1878° / 47°0Clear
78 °Clear

Diablo, Sunday, 18 October

Clear. High 78°, low 47°.

Pressure30.00 inHg
Wind5.9 mph SW
Humidity36%
Visibility6.2 mi
Dew point48°
Mon, 1964° / 42°0Partly cloudy
64 °Partly cloudy

Diablo, Monday, 19 October

Partly cloudy. High 64°, low 42°.

Pressure29.97 inHg
Wind9.5 mph W
Humidity53%
Visibility6.2 mi
Dew point44°
Tue, 2069° / 48°0.02Light rain
69 °Light rain

Diablo, Tuesday, 20 October

Light rain. High 69°, low 48°.

Pressure29.91 inHg
Wind1.6 mph N
Humidity50%
Visibility6.2 mi
Dew point44°
Wed, 2167° / 54°0.64Rain
67 °Rain

Diablo, Wednesday, 21 October

Rain. High 67°, low 54°.

Pressure29.91 inHg
Wind0.6 mph SE
Humidity66%
Visibility6.2 mi
Dew point51°
Thu, 2266° / 51°0Overcast
66 °Overcast

Diablo, Thursday, 22 October

Overcast. High 66°, low 51°.

Pressure30.00 inHg
Wind7.8 mph W
Humidity80%
Visibility—
Dew point54°
Fri, 2369° / 52°0Mostly clear
69 °Mostly clear

Diablo, Friday, 23 October

Mostly clear. High 69°, low 52°.

Pressure30.12 inHg
Wind7.1 mph S
Humidity67%
Visibility—
Dew point49°
Sat, 2476° / 54°0Clear
76 °Clear

Diablo, Saturday, 24 October

Clear. High 76°, low 54°.

Pressure30.12 inHg
Wind4.1 mph NE
Humidity32%
Visibility—
Dew point35°
Sun, 2576° / 58°0Overcast
76 °Overcast

Diablo, Sunday, 25 October

Overcast. High 76°, low 58°.

Pressure30.03 inHg
Wind4.1 mph NE
Humidity31%
Visibility—
Dew point35°
Mon, 2674° / 58°0Overcast
74 °Overcast

Diablo, Monday, 26 October

Overcast. High 74°, low 58°.

Pressure29.80 inHg
Wind5.9 mph NE
Humidity23%
Visibility—
Dew point28°
Tue, 2776° / 54°0Overcast
76 °Overcast

Diablo, Tuesday, 27 October

Overcast. High 76°, low 54°.

Pressure29.77 inHg
Wind6.5 mph SW
Humidity28%
Visibility—
Dew point38°
Wed, 2864° / 53°0Overcast
64 °Overcast

Diablo, Wednesday, 28 October

Overcast. High 64°, low 53°.

Pressure30.06 inHg
Wind9.7 mph SW
Humidity54%
Visibility—
Dew point44°
Thu, 2971° / 50°0Clear
71 °Clear

Diablo, Thursday, 29 October

Clear. High 71°, low 50°.

Pressure30.12 inHg
Wind7.6 mph W
Humidity48%
Visibility—
Dew point42°
Fri, 3058° / 54°0.04Light rain
58 °Light rain

Diablo, Friday, 30 October

Light rain. High 58°, low 54°.

Pressure30.03 inHg
Wind8.4 mph SW
Humidity76%
Visibility—
Dew point49°
Sat, 3164° / 54°0.01Light rain
64 °Light rain

Diablo, Saturday, 31 October

Light rain. High 64°, low 54°.

Pressure30.06 inHg
Wind4.9 mph SW
Humidity59%
Visibility—
Dew point43°
Sun, 0166° / 55°0.01Light rain
66 °Light rain

Diablo, Sunday, 1 November

Light rain. High 66°, low 55°.

Pressure30.06 inHg
Wind11.6 mph W
Humidity66%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0270° / 51°0.03Climate normal
70 °Climate normal

Diablo, Monday, 2 November

Climate normal for this date — 60-year average.

Average high70°
Average low51°
Average precipitation0.03 in
Chance of precipitation13%
Record high87° (2020)
Record low43° (2003)
Tue, 0369° / 50°0.04Climate normal
69 °Climate normal

Diablo, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high69°
Average low50°
Average precipitation0.04 in
Chance of precipitation13%
Record high84° (2018)
Record low37° (2022)
Wed, 0469° / 51°0.02Climate normal
69 °Climate normal

Diablo, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high69°
Average low51°
Average precipitation0.02 in
Chance of precipitation10%
Record high80° (1980)
Record low39° (1973)
Thu, 0568° / 50°0.06Climate normal
68 °Climate normal

Diablo, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high68°
Average low50°
Average precipitation0.06 in
Chance of precipitation15%
Record high84° (2020)
Record low43° (1996)
Fri, 0667° / 51°0.05Climate normal
67 °Climate normal

Diablo, Friday, 6 November

Climate normal for this date — 60-year average.

Average high67°
Average low51°
Average precipitation0.05 in
Chance of precipitation15%
Record high79° (1976)
Record low43° (1972)
Sat, 0767° / 50°0.06Climate normal
67 °Climate normal

Diablo, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high67°
Average low50°
Average precipitation0.06 in
Chance of precipitation17%
Record high79° (1991)
Record low40° (1971)
Sun, 0865° / 49°0.06Climate normal
65 °Climate normal

Diablo, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high65°
Average low49°
Average precipitation0.06 in
Chance of precipitation18%
Record high79° (1978)
Record low42° (2011)
Mon, 0965° / 48°0.08Climate normal
65 °Climate normal

Diablo, Monday, 9 November

Climate normal for this date — 60-year average.

Average high65°
Average low48°
Average precipitation0.08 in
Chance of precipitation20%
Record high78° (1990)
Record low36° (2020)
Tue, 1065° / 49°0.12Climate normal
65 °Climate normal

Diablo, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high65°
Average low49°
Average precipitation0.12 in
Chance of precipitation30%
Record high80° (2025)
Record low38° (2020)
Wed, 1164° / 49°0.09Climate normal
64 °Climate normal

Diablo, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high64°
Average low49°
Average precipitation0.09 in
Chance of precipitation27%
Record high79° (2019)
Record low38° (2000)
Thu, 1265° / 48°0.07Climate normal
65 °Climate normal

Diablo, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high65°
Average low48°
Average precipitation0.07 in
Chance of precipitation17%
Record high78° (2019)
Record low38° (1985)
Fri, 1364° / 48°0.13Climate normal
64 °Climate normal

Diablo, Friday, 13 November

Climate normal for this date — 60-year average.

Average high64°
Average low48°
Average precipitation0.13 in
Chance of precipitation30%
Record high80° (1995)
Record low34° (2000)
Sat, 1464° / 48°0.06Climate normal
64 °Climate normal

Diablo, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high64°
Average low48°
Average precipitation0.06 in
Chance of precipitation25%
Record high79° (2008)
Record low37° (1994)
Sun, 1564° / 48°0.06Climate normal
64 °Climate normal

Diablo, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high64°
Average low48°
Average precipitation0.06 in
Chance of precipitation20%
Record high78° (2010)
Record low38° (2000)

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 Diablo, 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 Diablo, 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.