Model estimate for 10:00 AM PDT (no recent station report)

Diablo, CA weather

Sunny and 57°14°.

Mostly agree

Now 57°14°

Sunny

Wind: 5 mph8 km/hgusts 19 mph31 km/h; From the north-northeast. Up to 6 mph10 km/h through 10 PM
Dew point: 39°4°; Comfortable
UV index: 1Low; Moderate 11 AM–4 PM · peak 4
Air quality: 23Good; Main pollutant: Ozone

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Above 60°16° today by 11 AM
High 72°22° today at 3 PM
Below 60°16° tonight after 8 PM
Low 47°8° tomorrow at 6 AM

This morningUp to 61°16° by 11 AM · Clear
This afternoonUp to 72°22° by 3 PM · Clear
TonightDown to 49°9° by 5 AM · Clear
Tomorrow morningUp to 64°18° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 74°23° by 3 PM · Mostly cloudy
Tomorrow nightDown to 49°9° by 5 AM · Partly cloudy
Monday morningUp to 53°12° by 9 AM · Mostly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 10a	Sunny	57°14° (likely 57°14° to 61°16°)	57°14°	0%	5 mph8 km/h from NNE, gusts 19 mph31 km/h	50%	0%	1
Sat 11a	Sunny	61°16° (likely 61°16° to 63°17°)	61°16°	0%	6 mph10 km/h from NNE, gusts 20 mph32 km/h	45%	0%	3
Sat 12p	Sunny	66°19° (likely 64°18° to 66°19°)	66°19°	0%	6 mph10 km/h from N, gusts 17 mph27 km/h	43%	0%	4
Sat 1p	Sunny	68°20° (likely 66°19° to 68°20°)	68°20°	0%	5 mph8 km/h from N, gusts 15 mph24 km/h	41%	0%	4
Sat 2p	Sunny	70°21° (likely 67°19° to 71°22°)	70°21°	0%	5 mph8 km/h from N, gusts 13 mph21 km/h	40%	0%	4
Sat 3p	Sunny	72°22° (likely 68°20° to 72°22°)	72°22°	0%	3 mph5 km/h from N, gusts 12 mph19 km/h	36%	0%	3
Sat 4p	Sunny	72°22° (likely 67°19° to 72°22°)	72°22°	0%	2 mph3 km/h from N, gusts 10 mph16 km/h	36%	0%	2
Sat 5p	Sunny	72°22° (likely 67°19° to 72°22°)	72°22°	0%	2 mph3 km/h from NNW, gusts 8 mph13 km/h	34%	0%	2
Sat 6p	Clear	69°21° (likely 63°17° to 69°21°)	69°21°	0%	0 mph0 km/h, gusts 5 mph9 km/h	40%	0%	1
Sat 7p	Clear	62°17° (likely 59°15° to 62°17°)	62°17°	0%	0 mph0 km/h, gusts 5 mph7 km/h	48%	0%	0
Sat 8p	Clear	58°14° (likely 56°13° to 59°15°)	59°15°	0%	0 mph0 km/h, gusts 5 mph8 km/h	54%	0%	0
Sat 9p	Clear	56°13° (likely 54°12° to 58°14°)	56°13°	0%	0 mph0 km/h, gusts 5 mph8 km/h	60%	0%	0
Sat 10p	Clear	54°12° (likely 53°12° to 57°14°)	54°12°	0%	0 mph0 km/h, gusts 3 mph4 km/h	61%	0%	0
Sat 11p	Clear	54°12° (likely 52°11° to 55°13°)	54°12°	0%	0 mph0 km/h, gusts 3 mph5 km/h	62%	0%	0
Sun 12a	Clear	53°12° (likely 51°11° to 55°13°)	53°12°	0%	0 mph0 km/h, gusts 3 mph6 km/h	64%	0%	0
Sun 1a	Clear	52°11° (likely 51°11° to 54°12°)	52°11°	0%	0 mph0 km/h, gusts 4 mph7 km/h	65%	0%	0
Sun 2a	Clear	51°11° (likely 50°10° to 54°12°)	51°11°	0%	0 mph0 km/h, gusts 4 mph7 km/h	66%	0%	0
Sun 3a	Clear	50°10° (likely 50°10° to 53°12°)	50°10°	0%	0 mph0 km/h, gusts 4 mph6 km/h	67%	41%	0
Sun 4a	Mostly clear	50°10° (likely 50°10° to 53°12°)	50°10°	0%	0 mph0 km/h, gusts 4 mph6 km/h	66%	52%	0
Sun 5a	Partly cloudy	49°9° (likely 49°9° to 53°12°)	49°9°	0%	1 mph2 km/h from E, gusts 5 mph7 km/h	67%	56%	0
Sun 6a	Cloudy	47°8° (likely 47°8° to 53°12°)	47°8°	0%	1 mph2 km/h from E, gusts 4 mph7 km/h	68%	66%	0
Sun 7a	Partly sunny	48°9° (likely 48°9° to 52°11°)	48°9°	0%	1 mph2 km/h from E, gusts 4 mph7 km/h	69%	63%	0
Sun 8a	Partly sunny	48°9° (likely 48°9° to 52°11°)	49°9°	0%	2 mph3 km/h from ENE, gusts 4 mph6 km/h	70%	70%	0
Sun 9a	Partly sunny	53°12° (likely 53°12° to 56°13°)	53°12°	0%	2 mph3 km/h from ENE, gusts 4 mph6 km/h	69%	74%	1
Sun 10a	Cloudy	59°15° (likely 59°15° to 62°17°)	59°15°	0%	2 mph3 km/h from ENE, gusts 5 mph7 km/h	62%	81%	2
Sun 11a	Cloudy	64°18° (likely 63°17° to 66°19°)	64°18°	0%	2 mph3 km/h from N, gusts 7 mph11 km/h	54%	81%	3
Sun 12p	Mostly sunny	68°20° (likely 66°19° to 69°21°)	68°20°	0%	2 mph3 km/h from N, gusts 7 mph11 km/h	50%	69%	4
Sun 1p	Mostly sunny	70°21° (likely 67°19° to 72°22°)	71°22°	0%	2 mph3 km/h from N, gusts 7 mph11 km/h	47%	69%	4
Sun 2p	Cloudy	73°23° (likely 69°21° to 73°23°)	73°23°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	44%	83%	4
Sun 3p	Mostly sunny	74°23° (likely 69°21° to 74°23°)	74°23°	0%	3 mph5 km/h from W, gusts 10 mph15 km/h	42%	81%	3
Sun 4p	Mostly sunny	73°23° (likely 68°20° to 73°23°)	73°23°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	42%	78%	2
Sun 5p	Cloudy	73°23° (likely 66°19° to 73°23°)	73°23°	0%	1 mph2 km/h from W, gusts 8 mph13 km/h	41%	75%	1
Sun 6p	Partly cloudy	69°21° (likely 62°17° to 69°21°)	69°21°	0%	1 mph2 km/h from W, gusts 7 mph12 km/h	47%	81%	0
Sun 7p	Partly cloudy	64°18° (likely 58°14° to 64°18°)	64°18°	0%	1 mph2 km/h from W, gusts 7 mph12 km/h	56%	80%	0
Sun 8p	Cloudy	58°14° (likely 55°13° to 58°14°)	59°15°	0%	0 mph0 km/h, gusts 7 mph12 km/h	64%	82%	0
Sun 9p	Mostly clear	56°13° (likely 53°12° to 56°13°)	56°13°	0%	0 mph0 km/h, gusts 7 mph12 km/h	69%	76%	0
Sun 10p	Mostly clear	54°12° (likely 51°11° to 54°12°)	54°12°	0%	0 mph0 km/h, gusts 8 mph13 km/h	73%	25%	0
Sun 11p	Mostly clear	53°12° (likely 50°10° to 53°12°)	53°12°	0%	1 mph2 km/h from WSW, gusts 8 mph13 km/h	75%	12%	0
Mon 12a	Mostly clear	52°11° (likely 50°10° to 52°11°)	52°11°	0%	1 mph2 km/h from WSW, gusts 9 mph14 km/h	78%	17%	0
Mon 1a	Mostly clear	52°11° (likely 50°10° to 52°11°)	52°11°	0%	1 mph2 km/h from WSW, gusts 9 mph15 km/h	81%	26%	0
Mon 2a	Partly cloudy	51°11° (likely 49°9° to 52°11°)	51°11°	0%	2 mph3 km/h from SW, gusts 9 mph15 km/h	83%	48%	0
Mon 3a	Partly cloudy	50°10° (likely 49°9° to 52°11°)	51°11°	0%	2 mph3 km/h from SW, gusts 9 mph15 km/h	85%	51%	0
Mon 4a	Partly cloudy	50°10° (likely 49°9° to 52°11°)	50°10°	0%	2 mph3 km/h from SW, gusts 10 mph16 km/h	86%	48%	0
Mon 5a	Partly cloudy	49°9° (likely 49°9° to 52°11°)	48°9°	0%	5 mph8 km/h from SW, gusts 10 mph16 km/h	87%	40%	0
Mon 6a	Partly cloudy	48°9° (likely 48°9° to 52°11°)	47°8°	0%	5 mph8 km/h from SW, gusts 11 mph17 km/h	90%	72%	0
Mon 7a	Cloudy	48°9° (likely 48°9° to 52°11°)	46°8°	0%	5 mph8 km/h from SW, gusts 9 mph15 km/h	92%	79%	0
Mon 8a	Cloudy	49°9° (likely 49°9° to 53°12°)	48°9°	0%	3 mph5 km/h from SW, gusts 9 mph15 km/h	92%	67%	0
Mon 9a	Partly sunny	53°12° (likely 52°11° to 55°13°)	53°12°	0%	3 mph5 km/h from SW, gusts 13 mph21 km/h	87%	60%	1

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Sunny. High 73°23°, low 46°8°. Typical 69°21° / 52°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 61°16°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°9°
  Dry
Official NWS forecast
Today: Sunny, with a high near 73. North wind 2 to 6 mph.
Tonight: Mostly clear. Low around 46, with temperatures rising to around 49 overnight. East wind around 1 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–73°23°
Low, likely
45°7°–51°11°
Typical high / low
69°21° / 52°11°
Wind
13 mph20 km/h, gusts 23 mph37 km/h
UV peak
5
Tomorrow, Oct 25. Partly sunny. High 75°24°, low 47°8°. Typical 69°21° / 52°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 49°9°
  Dry
Official NWS forecast
Day: Mostly sunny. High near 75, with temperatures falling to around 73 in the afternoon. North wind around 3 mph.
Night: Partly cloudy, with a low around 47. West southwest wind 0 to 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
69°21°–75°24°
Low, likely
47°8°–52°11°
Typical high / low
69°21° / 52°11°
Wind
6 mph10 km/h, gusts 18 mph28 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 69°21°, low 44°7°. Typical 68°20° / 52°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 69. West southwest wind 3 to 7 mph.
Night: Mostly clear, with a low around 44.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–69°21°
Low, likely
44°7°–50°10°
Typical high / low
68°20° / 52°11°
Wind
10 mph17 km/h, gusts 26 mph41 km/h
UV peak
5
Tuesday, Oct 27. Fog. High 69°21°, low 45°7°. Typical 68°20° / 51°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 45°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy fog between 7am and 9am. Mostly sunny, with a high near 69.
Night: Partly cloudy, with a low around 45.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–69°21°
Low, likely
45°7°–49°9°
Typical high / low
68°20° / 51°11°
Wind
7 mph10 km/h, gusts 15 mph24 km/h
UV peak
5
Wednesday, Oct 28. Cloudy. High 68°20°, low 46°8°. Typical 68°20° / 51°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 51°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 68.
Night: Mostly cloudy, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–68°20°
Low, likely
41°5°–48°9°
Typical high / low
68°20° / 51°11°
Wind
5 mph8 km/h, gusts 19 mph30 km/h
UV peak
4
Thursday, Oct 29. Rain. High 66°19°, low 46°8°. Typical 67°19° / 51°11°. Rain, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy fog between 8am and 9am, then a slight chance of rain. Partly sunny, with a high near 66.
Night: A chance of rain. Partly cloudy, with a low around 46.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
59°15°–67°19°
Low, likely
45°7°–51°11°
Typical high / low
67°19° / 51°11°
Wind
8 mph13 km/h, gusts 17 mph27 km/h
UV peak
4
Friday, Oct 30. Rain. High 65°18°, low 45°7°. Typical 67°19° / 50°10°. Rain 0.01 in0.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°16°
  20% chance
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 43°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain before 8am, then a chance of rain and patchy fog. Partly sunny, with a high near 65.
Night: A chance of rain. Mostly cloudy, with a low around 45.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
58°14°–65°18°
Low, likely
39°4°–46°8°
Typical high / low
67°19° / 50°10°
Wind
11 mph18 km/h, gusts 24 mph39 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 61°16°, low 43°6°. Typical 66°19° / 50°10°. Rain 0.03 in0.8 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 51°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 42°6°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
59°15°–65°18°
Low, likely
35°2°–46°8°
Typical high / low
66°19° / 50°10°
Wind
7 mph11 km/h, gusts 17 mph27 km/h
UV peak
4
Sunday, Nov 1. Drizzle. High 63°17°, low 42°6°. Typical 66°19° / 50°10°. Rain 0.02 in0.5 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Rain, 44°7°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
58°14°–68°20°
Low, likely
37°3°–46°8°
Typical high / low
66°19° / 50°10°
Wind
7 mph11 km/h, gusts 18 mph29 km/h
UV peak
4
Monday, Nov 2. Rain. High 58°14°, low 46°8°. Typical 66°19° / 50°10°. Rain 0.14 in3.6 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 59°15°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 51°11°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
53°12°–63°17°
Low, likely
40°4°–49°9°
Typical high / low
66°19° / 50°10°
Wind
8 mph12 km/h, gusts 19 mph31 km/h

10 days15 days30 days

The outlook

Today
Dry, high 73°, low 46°.
Tomorrow
Dry, high 75°, low 47°.
Monday
Dry, high 69°, low 44°, cooling off.
Rest of week
Mostly dry, highs 58–69°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (MTR) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Alamo Canal near Pleasanton

10 mi

Below flood stage

Level: 1.9 ft
Flow: 4 cfs

Forecast peak 1.9 ft Sat 11 AM

Reading from Sat 9:45 AM · NWS gauge page

Green Valley Creek at Diablo Road

1.9 mi

Level: 1.2 ft

Reading from Sat 9:15 AM · NWS gauge page

San Ramon Creek at San Ramon

5.1 mi

Level: 2.6 ft
Flow: 1 cfs

Reading from Sat 9:45 AM · NWS gauge page

Marsh Creek at March Creek Fire

6.5 mi

Level: 0.1 ft

Reading from Sat 10 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 57% less heating than a typical week.

This week 16Typical 38

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 1
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at.

Comfort

Dry air outside (dew point 39°F).

Open the windows?

Today, 11:00 AM–7:00 PM

Good stretch to open the windows.

Is this typical?

MOUNT DIABLO JUNCTION · official normals 1991–2020 · records 1952–2026

Oct 24, today vs a typical year

Today’s expected high is 4°2° warmer than typical.

Last 7 days vs normal

—SunOct 18
—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

Diablo weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 53 min; Losing 2 min 11 s a day; shortest Dec 21, 1 h 20 min less
Golden hour: 5:41–6:34 PM; Morning 7:08–8:01 AM
Blue hour: 6:34–6:44 PM; Morning 6:58–7:08 AM; first light 6:58 AM

Stars tonight? Fair

Mostly clear 6:44 PM–3 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:46 AM · rises 5:17 PM
Full moon: Oct 25
New moon: Nov 8

Looking northeast from Diablo. The highest point on the skyline is about 3,700 ft, 4 mi away.Skyline from USGS elevation data, heights drawn up to 2× taller. Sky, sun and moon as they are now.