As of 07:04 PDT

Weather in Diablo, CA

55°Current weather

Diablo, Wednesday, 21 October, 07:04

Clear. Feels like 53°. High 67°, low 55°.

Pressure29.83 inHg
Wind0 mph N
Humidity71%
Visibility6.2 mi
Dew point46°

Monthly outlook for Diablo, CA: average high 69.3°, average low 52.2°. That is 0.5° below the climate normal for October. Precipitation is expected on 1 day (about 0.9 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 2 November (76.1°), the coolest 1 November (47.2°).

69.3°/52.2°
Average high / low
−0.5°
Below normal
1 / 2
Wet days / normal
0.9 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
21 October – 30 October69.3°71°-0.9°
31 October – 9 November69.4°67.9°+0.9°
10 November – 19 Novemberat normal63.7°—

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).

Thu, 2265° / 53°0.94Heavy rain
65 °Heavy rain

Diablo, Thursday, 22 October

Heavy rain. High 65°, low 53°.

Pressure29.91 inHg
Wind2.8 mph SW
Humidity71%
Visibility6.2 mi
Dew point55°
Fri, 2366° / 54°0Overcast
66 °Overcast

Diablo, Friday, 23 October

Overcast. High 66°, low 54°.

Pressure30.06 inHg
Wind6.3 mph N
Humidity78%
Visibility2.0 mi
Dew point53°
Sat, 2468° / 52°0Clear
68 °Clear

Diablo, Saturday, 24 October

Clear. High 68°, low 52°.

Pressure30.03 inHg
Wind5 mph N
Humidity38%
Visibility6.2 mi
Dew point38°
Sun, 2571° / 52°0Partly cloudy
71 °Partly cloudy

Diablo, Sunday, 25 October

Partly cloudy. High 71°, low 52°.

Pressure30.09 inHg
Wind3.4 mph S
Humidity55%
Visibility—
Dew point46°
Mon, 2669° / 51°0Partly cloudy
69 °Partly cloudy

Diablo, Monday, 26 October

Partly cloudy. High 69°, low 51°.

Pressure30.12 inHg
Wind6.1 mph W
Humidity67%
Visibility—
Dew point51°
Tue, 2775° / 53°0Overcast
75 °Overcast

Diablo, Tuesday, 27 October

Overcast. High 75°, low 53°.

Pressure30.06 inHg
Wind3.8 mph W
Humidity31%
Visibility—
Dew point35°
Wed, 2873° / 53°0Overcast
73 °Overcast

Diablo, Wednesday, 28 October

Overcast. High 73°, low 53°.

Pressure29.94 inHg
Wind5 mph W
Humidity29%
Visibility—
Dew point31°
Thu, 2967° / 51°0Overcast
67 °Overcast

Diablo, Thursday, 29 October

Overcast. High 67°, low 51°.

Pressure29.94 inHg
Wind6.6 mph W
Humidity51%
Visibility—
Dew point43°
Fri, 3071° / 50°0Mostly clear
71 °Mostly clear

Diablo, Friday, 30 October

Mostly clear. High 71°, low 50°.

Pressure29.94 inHg
Wind4.9 mph SW
Humidity34%
Visibility—
Dew point35°
Sat, 3165° / 48°0Partly cloudy
65 °Partly cloudy

Diablo, Saturday, 31 October

Partly cloudy. High 65°, low 48°.

Pressure29.94 inHg
Wind5.6 mph SW
Humidity57%
Visibility—
Dew point43°
Sun, 0171° / 47°0Mostly clear
71 °Mostly clear

Diablo, Sunday, 1 November

Mostly clear. High 71°, low 47°.

Pressure30.06 inHg
Wind2.8 mph NE
Humidity39%
Visibility—
Dew point36°
Mon, 0276° / 56°0Overcast
76 °Overcast

Diablo, Monday, 2 November

Overcast. High 76°, low 56°.

Pressure30.12 inHg
Wind3.5 mph W
Humidity23%
Visibility—
Dew point29°
Tue, 0370° / 56°0Overcast
70 °Overcast

Diablo, Tuesday, 3 November

Overcast. High 70°, low 56°.

Pressure30.09 inHg
Wind6.6 mph W
Humidity36%
Visibility—
Dew point38°
Wed, 0469° / 54°0Partly cloudy
69 °Partly cloudy

Diablo, Wednesday, 4 November

Partly cloudy. High 69°, low 54°.

Pressure30.03 inHg
Wind8.9 mph W
Humidity62%
Visibility—
Dew point50°
Thu, 0566° / 50°0Mostly clear
66 °Mostly clear

Diablo, Thursday, 5 November

Mostly clear. High 66°, low 50°.

Pressure30.03 inHg
Wind10.9 mph W
Humidity44%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Mon, 1664° / 49°0.08Climate normal
64 °Climate normal

Diablo, Monday, 16 November

Climate normal for this date — 60-year average.

Average high64°
Average low49°
Average precipitation0.08 in
Chance of precipitation25%
Record high75° (2019)
Record low39° (1964)
Tue, 1763° / 48°0.11Climate normal
63 °Climate normal

Diablo, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high63°
Average low48°
Average precipitation0.11 in
Chance of precipitation25%
Record high75° (1989)
Record low35° (1964)
Wed, 1862° / 47°0.07Climate normal
62 °Climate normal

Diablo, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high62°
Average low47°
Average precipitation0.07 in
Chance of precipitation15%
Record high77° (2019)
Record low37° (1985)
Thu, 1962° / 46°0.05Climate normal
62 °Climate normal

Diablo, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high62°
Average low46°
Average precipitation0.05 in
Chance of precipitation23%
Record high73° (1989)
Record low33° (1964)

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.