Observed 1:15 AM PDT at KCCR

Walnut Creek, CA weather

Clear and 52°11°.

Mostly agree

Now 52°11°

Clear

Wind: 3 mph5 km/h; From the south-southeast. Up to 7 mph11 km/h through 1 PM
Dew point: 46°8°; Comfortable · down to 36°2° by 2 AM
UV index: 0Low; Moderate 11 AM–5 PM · peak 5
Air quality: 28Good; Main pollutant: Ozone
Pressure: 30.04 inHg1017 hPa; Steady over the next 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Low 48°9° today at 7 AM
Above 60°16° today by 11 AM
High 72°22° today at 3 PM
Below 60°16° tonight after 9 PM

TonightDown to 49°9° by 5 AM · Clear
This morningUp to 63°17° by 11 AM · Clear
This afternoonUp to 72°22° by 3 PM · Clear
TonightDown to 49°9° by 5 AM · Clear
Tomorrow morningUp to 63°17° by 11 AM · Partly cloudy
Tomorrow afternoonUp to 74°23° by 3 PM · Mostly cloudy
Tomorrow nightDown to 54°12° by midnight · Partly 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 1a	Clear	54°12° (likely 52°11° to 55°13°)	54°12°	0%	2 mph3 km/h from SSE, gusts 8 mph12 km/h	57%	0%	0
Sat 2a	Clear	52°11° (likely 52°11° to 55°13°)	52°11°	0%	2 mph3 km/h from SSE, gusts 8 mph12 km/h	56%	0%	0
Sat 3a	Clear	51°11° (likely 51°11° to 55°13°)	51°11°	0%	2 mph3 km/h from SSE, gusts 8 mph12 km/h	55%	0%	0
Sat 4a	Clear	50°10° (likely 50°10° to 56°13°)	51°11°	0%	2 mph3 km/h from SE, gusts 7 mph12 km/h	54%	0%	0
Sat 5a	Clear	49°9° (likely 49°9° to 56°13°)	49°9°	0%	2 mph3 km/h from SE, gusts 7 mph12 km/h	53%	0%	0
Sat 6a	Clear	49°9° (likely 49°9° to 56°13°)	49°9°	0%	2 mph3 km/h from ESE, gusts 9 mph14 km/h	54%	0%	0
Sat 7a	Sunny	48°9° (likely 48°9° to 55°13°)	48°9°	0%	3 mph5 km/h from ESE, gusts 10 mph16 km/h	56%	0%	0
Sat 8a	Sunny	49°9° (likely 49°9° to 55°13°)	48°9°	0%	3 mph5 km/h from E, gusts 11 mph17 km/h	56%	0%	0
Sat 9a	Sunny	55°13° (likely 55°13° to 58°14°)	55°13°	0%	5 mph8 km/h from ENE, gusts 10 mph17 km/h	53%	0%	1
Sat 10a	Sunny	59°15° (likely 59°15° to 63°17°)	59°15°	0%	6 mph10 km/h from NE, gusts 11 mph18 km/h	49%	0%	2
Sat 11a	Sunny	63°17° (likely 62°17° to 66°19°)	63°17°	0%	7 mph11 km/h from NNE, gusts 14 mph22 km/h	44%	0%	3
Sat 12p	Sunny	67°19° (likely 64°18° to 68°20°)	67°19°	0%	7 mph11 km/h from NNE, gusts 16 mph26 km/h	41%	0%	4
Sat 1p	Sunny	69°21° (likely 67°19° to 69°21°)	69°21°	0%	6 mph10 km/h from NNE, gusts 14 mph23 km/h	39%	0%	5
Sat 2p	Sunny	71°22° (likely 68°20° to 71°22°)	71°22°	0%	5 mph8 km/h from NNE, gusts 13 mph20 km/h	38%	0%	5
Sat 3p	Sunny	72°22° (likely 69°21° to 73°23°)	72°22°	0%	3 mph5 km/h from N, gusts 10 mph17 km/h	36%	0%	4
Sat 4p	Sunny	72°22° (likely 69°21° to 74°23°)	72°22°	0%	2 mph3 km/h from N, gusts 9 mph14 km/h	36%	0%	3
Sat 5p	Sunny	72°22° (likely 68°20° to 73°23°)	73°23°	0%	2 mph3 km/h from N, gusts 7 mph12 km/h	35%	0%	2
Sat 6p	Clear	69°21° (likely 65°18° to 69°21°)	69°21°	0%	0 mph0 km/h, gusts 8 mph14 km/h	41%	0%	1
Sat 7p	Clear	63°17° (likely 60°16° to 63°17°)	63°17°	0%	0 mph0 km/h, gusts 7 mph11 km/h	49%	0%	0
Sat 8p	Clear	60°16° (likely 57°14° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 6 mph9 km/h	57%	0%	0
Sat 9p	Clear	58°14° (likely 55°13° to 59°15°)	58°14°	0%	0 mph0 km/h, gusts 5 mph8 km/h	59%	0%	0
Sat 10p	Clear	56°13° (likely 53°12° to 58°14°)	56°13°	0%	0 mph0 km/h, gusts 4 mph7 km/h	62%	0%	0
Sat 11p	Clear	55°13° (likely 52°11° to 57°14°)	55°13°	0%	0 mph0 km/h, gusts 5 mph8 km/h	65%	6%	0
Sun 12a	Clear	54°12° (likely 51°11° to 56°13°)	54°12°	0%	0 mph0 km/h, gusts 6 mph10 km/h	66%	0%	0
Sun 1a	Clear	53°12° (likely 50°10° to 55°13°)	53°12°	0%	0 mph0 km/h, gusts 6 mph10 km/h	66%	0%	0
Sun 2a	Clear	52°11° (likely 49°9° to 55°13°)	52°11°	0%	0 mph0 km/h, gusts 5 mph9 km/h	69%	0%	0
Sun 3a	Clear	50°10° (likely 49°9° to 54°12°)	50°10°	0%	0 mph0 km/h, gusts 5 mph8 km/h	71%	39%	0
Sun 4a	Clear	50°10° (likely 49°9° to 54°12°)	50°10°	0%	0 mph0 km/h, gusts 5 mph9 km/h	72%	41%	0
Sun 5a	Cloudy	49°9° (likely 48°9° to 54°12°)	49°9°	0%	0 mph0 km/h, gusts 5 mph8 km/h	72%	59%	0
Sun 6a	Mostly clear	48°9° (likely 47°8° to 55°13°)	48°9°	0%	0 mph0 km/h, gusts 4 mph6 km/h	74%	25%	0
Sun 7a	Mostly sunny	48°9° (likely 46°8° to 55°13°)	48°9°	0%	0 mph0 km/h, gusts 4 mph6 km/h	76%	70%	0
Sun 8a	Partly sunny	48°9° (likely 46°8° to 55°13°)	48°9°	0%	2 mph3 km/h from ENE, gusts 3 mph5 km/h	76%	53%	0
Sun 9a	Partly sunny	53°12° (likely 51°11° to 57°14°)	53°12°	0%	2 mph3 km/h from ENE, gusts 4 mph7 km/h	71%	60%	1
Sun 10a	Partly sunny	59°15° (likely 54°12° to 61°16°)	59°15°	0%	2 mph3 km/h from ENE, gusts 6 mph9 km/h	64%	69%	2
Sun 11a	Mostly sunny	63°17° (likely 58°14° to 65°18°)	63°17°	0%	3 mph5 km/h from N, gusts 6 mph9 km/h	57%	70%	3
Sun 12p	Cloudy	68°20° (likely 62°17° to 69°21°)	68°20°	0%	3 mph5 km/h from N, gusts 5 mph9 km/h	51%	71%	4
Sun 1p	Mostly sunny	70°21° (likely 66°19° to 72°22°)	70°21°	0%	3 mph5 km/h from N, gusts 7 mph10 km/h	48%	68%	4
Sun 2p	Mostly sunny	72°22° (likely 69°21° to 73°23°)	72°22°	0%	3 mph5 km/h from WNW, gusts 8 mph12 km/h	44%	80%	4
Sun 3p	Cloudy	74°23° (likely 70°21° to 74°23°)	74°23°	0%	3 mph5 km/h from WNW, gusts 10 mph16 km/h	43%	80%	3
Sun 4p	Cloudy	73°23° (likely 67°19° to 73°23°)	73°23°	0%	3 mph5 km/h from WNW, gusts 11 mph17 km/h	43%	82%	3
Sun 5p	Cloudy	72°22° (likely 64°18° to 72°22°)	73°23°	0%	3 mph5 km/h from WSW, gusts 11 mph18 km/h	42%	83%	1
Sun 6p	Cloudy	69°21° (likely 60°16° to 69°21°)	69°21°	0%	3 mph5 km/h from WSW, gusts 12 mph19 km/h	49%	81%	0
Sun 7p	Partly cloudy	64°18° (likely 56°13° to 64°18°)	64°18°	0%	3 mph5 km/h from WSW, gusts 14 mph22 km/h	57%	79%	0
Sun 8p	Mostly clear	60°16° (likely 55°13° to 60°16°)	60°16°	0%	2 mph3 km/h from WSW, gusts 13 mph21 km/h	65%	71%	0
Sun 9p	Mostly clear	57°14° (likely 54°12° to 57°14°)	57°14°	0%	2 mph3 km/h from WSW, gusts 13 mph20 km/h	70%	38%	0
Sun 10p	Mostly clear	56°13° (likely 52°11° to 56°13°)	56°13°	0%	2 mph3 km/h from WSW, gusts 12 mph19 km/h	73%	36%	0
Sun 11p	Mostly clear	55°13° (likely 51°11° to 55°13°)	55°13°	0%	2 mph3 km/h from WSW, gusts 13 mph20 km/h	76%	40%	0
Mon 12a	Mostly clear	54°12° (likely 51°11° to 56°13°)	54°12°	0%	2 mph3 km/h from WSW, gusts 13 mph20 km/h	78%	31%	0

Days ahead

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

Today, Oct 24. Sunny. High 73°23°, low 47°8°. Typical 69°21° / 52°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°9°
  Dry
Official NWS forecast
Today: Sunny, with a high near 73. East northeast wind 2 to 7 mph.
Tonight: Clear. Low around 47, with temperatures rising to around 49 overnight. South southeast wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
69°21°–74°23°
Low, likely
47°8°–53°12°
Typical high / low
69°21° / 52°11°
Wind
7 mph11 km/h, gusts 29 mph47 km/h
UV peak
5
Tomorrow, Oct 25. Mostly sunny. High 74°23°, 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
  Cloudy, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 53°12°
  Dry
Official NWS forecast
Day: Sunny, with a high near 74. North northwest wind 0 to 3 mph.
Night: Mostly clear, with a low around 47. Southwest wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
70°21°–74°23°
Low, likely
46°8°–52°11°
Typical high / low
69°21° / 52°11°
Wind
10 mph15 km/h, gusts 19 mph30 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 69°21°, low 45°7°. Typical 68°20° / 52°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 69.
Night: Mostly clear, with a low around 45.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–69°21°
Low, likely
45°7°–53°12°
Typical high / low
68°20° / 52°11°
Wind
10 mph16 km/h, gusts 26 mph42 km/h
UV peak
5
Tuesday, Oct 27. Fog. High 68°20°, low 46°8°. Typical 68°20° / 51°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy fog before 9am. Sunny, with a high near 68.
Night: Partly cloudy, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–68°20°
Low, likely
46°8°–50°10°
Typical high / low
68°20° / 51°11°
Wind
11 mph17 km/h, gusts 17 mph28 km/h
UV peak
5
Wednesday, Oct 28. Cloudy. High 67°19°, low 47°8°. Typical 68°20° / 51°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 56°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 67.
Night: Mostly cloudy, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–67°19°
Low, likely
46°8°–50°10°
Typical high / low
68°20° / 51°11°
Wind
8 mph13 km/h
UV peak
5
Thursday, Oct 29. Rain. High 66°19°, low 47°8°. Typical 67°19° / 51°11°. Rain, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy fog between 7am and 9am, then a slight chance of rain. Mostly sunny, with a high near 66.
Night: A chance of rain. Partly cloudy, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–67°19°
Low, likely
47°8°–52°11°
Typical high / low
67°19° / 51°11°
Wind
11 mph17 km/h, gusts 20 mph33 km/h
UV peak
4
Friday, Oct 30. Rain. High 65°18°, low 48°9°. Typical 67°19° / 50°10°. Rain 0.06 in1.5 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  20% chance · 0.02 in0.5 mm
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  30% chance · 0.03 in0.8 mm
3. Evening
  6 PM–midnight
  Mostly clear, 53°12°
  30% chance
4. Overnight
  midnight–6 AM
  Clear, 47°8°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Partly sunny, with a high near 65.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
57°14°–68°20°
Low, likely
46°8°–51°11°
Typical high / low
67°19° / 50°10°
Wind
7 mph12 km/h, gusts 22 mph35 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 63°17°, low 46°8°. Typical 66°19° / 50°10°. Rain 0.02 in0.5 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 48°9°
  20% chance
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  30% chance
3. Evening
  6 PM–midnight
  Clear, 56°13°
  20% chance
4. Overnight
  midnight–6 AM
  Cloudy, 49°9°
  20% chance
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
59°15°–68°20°
Low, likely
39°4°–50°10°
Typical high / low
66°19° / 50°10°
Wind
7 mph11 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 67°19°, low 48°9°. Typical 66°19° / 50°10°. Rain, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  30% chance
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  20% chance
3. Evening
  6 PM–midnight
  Clear, 60°16°
  20% chance
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  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
63°17°–71°22°
Low, likely
41°5°–56°13°
Typical high / low
66°19° / 50°10°
Wind
8 mph12 km/h, gusts 15 mph24 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 68°20°, low 53°12°. Typical 66°19° / 50°10°. Rain 0.01 in0.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 70°21°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  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
62°17°–77°25°
Low, likely
48°9°–59°15°
Typical high / low
66°19° / 50°10°
Wind
7 mph11 km/h, gusts 15 mph25 km/h
UV peak
4

10 days15 days30 days

The outlook

Today
Dry, high 73°, low 47°.
Tomorrow
Dry, high 74°, low 47°.
Monday
Dry, high 69°, low 45°, cooling off.
Rest of week
Mostly dry, highs 63–68°.

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

Walnut Creek at Ygnacio Valley Road

0.9 mi

Level: 0.3 ft

Reading from Fri 11:30 PM · NWS gauge page

Tice Creek at Rossmoor Basin

2.5 mi

Level: 0.3 ft

Reading from Fri 11:15 PM · NWS gauge page

Grayson Creek at Taylor Blvd (City Yard)

4.4 mi

Level: 0.1 ft

Reading from Fri 11:45 PM · NWS gauge page

Walnut Creek at Diamond Blvd Bridge

4.7 mi

Level: 2.1 ft

Reading from Fri 11:15 PM · NWS gauge page

For your home

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

Heating this week

About 61% less heating than a typical week.

This week 15Typical 38

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 46°F).

Open the windows?

Today, 11:00 AM–8:00 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

Walnut Creek weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 53 min; Losing 2 min 16 s a day; shortest Dec 21, 1 h 21 min less
Golden hour: 5:42–6:34 PM; Morning 7:09–8:02 AM
Blue hour: 6:34–6:45 PM; Morning 6:58–7:09 AM; first light 6:58 AM

Stars tonight? Good

Clear 1:37–6:58 AM; moon 96% lit, sets 5:47 AM.

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:47 AM · rises 5:18 PM
Full moon: Oct 25
New moon: Nov 8

Looking east from Walnut Creek. The highest point on the skyline is about 3,700 ft, 7 mi away.Skyline from USGS elevation data, heights drawn up to 3.5× taller. Sky, sun and moon as they are now.