Observed 8:35 AM PDT at KCCR

Port Costa, CA weather

Sunny and 50°10°.

Mostly agree

Now 50°10°

Sunny

Wind: 3 mph5 km/h; From the south-southeast. Up to 9 mph14 km/h through 8 PM
Dew point: 43°6°; Comfortable
UV index: 0Low; Moderate 11 AM–4 PM · peak 4
Air quality: 24Good; Main pollutant: Ozone
Pressure: 30.07 inHg1018 hPa; Rising slowly · +0.02 inHg+0.5 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

10°6° cooler than this time yesterday (57°14° then, 47°8° now)

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 48°9° tomorrow at 6 AM

This morningUp to 62°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 59°15° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 70°21° by 3 PM · Mostly cloudy
Tomorrow nightDown to 51°11° by 4 AM · 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 8a	Sunny	50°10° (likely 50°10° to 54°12°)	48°9°	0%	6 mph10 km/h from SE, gusts 5 mph8 km/h	59%	5%	0
Sat 9a	Sunny	54°12° (likely 54°12° to 57°14°)	54°12°	0%	7 mph11 km/h from ESE, gusts 4 mph7 km/h	56%	1%	0
Sat 10a	Sunny	58°14° (likely 58°14° to 61°16°)	58°14°	0%	8 mph13 km/h from E, gusts 5 mph8 km/h	51%	0%	1
Sat 11a	Sunny	62°17° (likely 61°16° to 66°19°)	62°17°	0%	9 mph14 km/h from ENE, gusts 7 mph11 km/h	47%	0%	3
Sat 12p	Sunny	67°19° (likely 65°18° to 69°21°)	67°19°	0%	8 mph13 km/h from ENE, gusts 6 mph10 km/h	43%	0%	4
Sat 1p	Sunny	68°20° (likely 68°20° to 71°22°)	69°21°	0%	7 mph11 km/h from NE, gusts 7 mph12 km/h	42%	0%	4
Sat 2p	Sunny	70°21° (likely 69°21° to 72°22°)	70°21°	0%	6 mph10 km/h from NE, gusts 5 mph8 km/h	40%	0%	4
Sat 3p	Sunny	72°22° (likely 70°21° to 73°23°)	72°22°	0%	3 mph5 km/h from NE, gusts 3 mph5 km/h	38%	0%	3
Sat 4p	Sunny	72°22° (likely 70°21° to 73°23°)	72°22°	0%	2 mph3 km/h from SW, gusts 4 mph7 km/h	38%	0%	2
Sat 5p	Sunny	71°22° (likely 69°21° to 72°22°)	71°22°	0%	2 mph3 km/h from WSW, gusts 6 mph10 km/h	38%	0%	2
Sat 6p	Clear	68°20° (likely 65°18° to 68°20°)	68°20°	0%	3 mph5 km/h from SW, gusts 8 mph13 km/h	46%	0%	1
Sat 7p	Clear	62°17° (likely 61°16° to 63°17°)	62°17°	0%	5 mph8 km/h from WSW, gusts 9 mph15 km/h	57%	0%	0
Sat 8p	Clear	58°14° (likely 58°14° to 61°16°)	58°14°	0%	5 mph8 km/h from W, gusts 8 mph13 km/h	64%	0%	0
Sat 9p	Clear	57°14° (likely 56°13° to 59°15°)	57°14°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	67%	8%	0
Sat 10p	Clear	55°13° (likely 55°13° to 57°14°)	55°13°	0%	3 mph5 km/h from W, gusts 7 mph12 km/h	69%	0%	0
Sat 11p	Clear	54°12° (likely 53°12° to 57°14°)	54°12°	0%	2 mph3 km/h from W, gusts 6 mph10 km/h	70%	2%	0
Sun 12a	Clear	52°11° (likely 52°11° to 56°13°)	52°11°	0%	2 mph3 km/h from WSW, gusts 6 mph9 km/h	74%	2%	0
Sun 1a	Mostly clear	52°11° (likely 52°11° to 55°13°)	52°11°	0%	2 mph3 km/h from WSW, gusts 6 mph10 km/h	75%	9%	0
Sun 2a	Clear	51°11° (likely 51°11° to 55°13°)	51°11°	0%	2 mph3 km/h from WSW, gusts 6 mph10 km/h	78%	41%	0
Sun 3a	Mostly clear	50°10° (likely 50°10° to 54°12°)	50°10°	0%	2 mph3 km/h from WSW, gusts 6 mph10 km/h	78%	56%	0
Sun 4a	Mostly clear	50°10° (likely 50°10° to 53°12°)	50°10°	0%	2 mph3 km/h from SW, gusts 6 mph10 km/h	79%	63%	0
Sun 5a	Partly cloudy	49°9° (likely 49°9° to 53°12°)	49°9°	0%	3 mph5 km/h from WSW, gusts 6 mph9 km/h	80%	80%	0
Sun 6a	Partly cloudy	48°9° (likely 48°9° to 53°12°)	48°9°	0%	3 mph5 km/h from WSW, gusts 6 mph9 km/h	83%	76%	0
Sun 7a	Cloudy	48°9° (likely 48°9° to 52°11°)	48°9°	0%	3 mph5 km/h from WSW, gusts 6 mph10 km/h	83%	88%	0
Sun 8a	Cloudy	48°9° (likely 48°9° to 53°12°)	46°8°	0%	6 mph10 km/h from ENE, gusts 7 mph11 km/h	85%	90%	0
Sun 9a	Partly sunny	51°11° (likely 51°11° to 56°13°)	51°11°	0%	6 mph10 km/h from ENE, gusts 7 mph12 km/h	83%	89%	1
Sun 10a	Partly sunny	56°13° (likely 54°12° to 58°14°)	56°13°	0%	6 mph10 km/h from ENE, gusts 8 mph12 km/h	77%	73%	2
Sun 11a	Cloudy	59°15° (likely 58°14° to 62°17°)	59°15°	0%	7 mph11 km/h from ENE, gusts 8 mph13 km/h	70%	76%	3
Sun 12p	Cloudy	64°18° (likely 62°17° to 64°18°)	65°18°	0%	7 mph11 km/h from ENE, gusts 8 mph13 km/h	61%	73%	4
Sun 1p	Cloudy	67°19° (likely 65°18° to 67°19°)	67°19°	0%	7 mph11 km/h from ENE, gusts 8 mph13 km/h	56%	80%	4
Sun 2p	Cloudy	69°21° (likely 68°20° to 69°21°)	69°21°	0%	5 mph8 km/h from WNW, gusts 8 mph13 km/h	52%	84%	4
Sun 3p	Cloudy	70°21° (likely 68°20° to 70°21°)	70°21°	0%	5 mph8 km/h from WNW, gusts 9 mph15 km/h	49%	84%	3
Sun 4p	Cloudy	70°21° (likely 66°19° to 70°21°)	70°21°	0%	5 mph8 km/h from WNW, gusts 12 mph19 km/h	48%	88%	3
Sun 5p	Cloudy	70°21° (likely 63°17° to 70°21°)	70°21°	0%	5 mph8 km/h from WSW, gusts 14 mph22 km/h	48%	92%	1
Sun 6p	Cloudy	66°19° (likely 59°15° to 66°19°)	66°19°	0%	5 mph8 km/h from WSW, gusts 15 mph24 km/h	56%	89%	0
Sun 7p	Partly cloudy	62°17° (likely 57°14° to 62°17°)	62°17°	0%	5 mph8 km/h from WSW, gusts 15 mph24 km/h	64%	87%	0
Sun 8p	Partly cloudy	58°14° (likely 55°13° to 59°15°)	58°14°	0%	6 mph10 km/h from SW, gusts 16 mph25 km/h	72%	78%	0
Sun 9p	Mostly clear	56°13° (likely 54°12° to 57°14°)	56°13°	0%	6 mph10 km/h from SW, gusts 13 mph21 km/h	76%	63%	0
Sun 10p	Clear	54°12° (likely 54°12° to 56°13°)	55°13°	0%	6 mph10 km/h from SW, gusts 12 mph20 km/h	78%	16%	0
Sun 11p	Clear	54°12° (likely 53°12° to 55°13°)	54°12°	0%	6 mph10 km/h from WSW, gusts 13 mph21 km/h	79%	2%	0
Mon 12a	Clear	53°12° (likely 52°11° to 55°13°)	53°12°	0%	6 mph10 km/h from WSW, gusts 13 mph21 km/h	82%	4%	0
Mon 1a	Clear	53°12° (likely 52°11° to 54°12°)	53°12°	0%	6 mph10 km/h from WSW, gusts 14 mph23 km/h	84%	12%	0
Mon 2a	Clear	52°11° (likely 52°11° to 54°12°)	53°12°	0%	6 mph10 km/h from SW, gusts 14 mph23 km/h	86%	18%	0
Mon 3a	Clear	52°11° (likely 52°11° to 54°12°)	52°11°	0%	6 mph10 km/h from SW, gusts 14 mph23 km/h	88%	17%	0
Mon 4a	Clear	51°11° (likely 51°11° to 55°13°)	51°11°	0%	6 mph10 km/h from SW, gusts 13 mph22 km/h	89%	20%	0
Mon 5a	Clear	51°11° (likely 51°11° to 55°13°)	48°9°	0%	7 mph11 km/h from WSW, gusts 12 mph20 km/h	91%	18%	0
Mon 6a	Partly cloudy	50°10° (likely 50°10° to 56°13°)	47°8°	0%	7 mph11 km/h from WSW, gusts 11 mph18 km/h	94%	38%	0
Mon 7a	Partly sunny	50°10° (likely 49°9° to 56°13°)	47°8°	0%	7 mph11 km/h from WSW, gusts 13 mph21 km/h	95%	35%	0

Days ahead

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

Today, Oct 24. Sunny. High 72°22°, low 47°8°. Typical 72°22° / 53°12°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 49°9°
  Dry
Official NWS forecast
Today: Sunny, with a high near 72. East southeast wind 2 to 9 mph.
Tonight: Mostly clear. Low around 47, with temperatures rising to around 49 overnight. West southwest wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
70°21°–73°23°
Low, likely
47°8°–53°12°
Typical high / low
72°22° / 53°12°
Wind
9 mph14 km/h
UV peak
5
Tomorrow, Oct 25. Partly sunny. High 71°22°, low 49°9°. Typical 71°22° / 52°11°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Partly sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 51°11°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 71. West wind 3 to 7 mph.
Night: Partly cloudy, with a low around 49. West southwest wind around 7 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
69°21°–71°22°
Low, likely
49°9°–52°11°
Typical high / low
71°22° / 52°11°
Wind
15 mph23 km/h, gusts 22 mph36 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 67°19°, low 46°8°. Typical 71°22° / 52°11°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 53°11°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°14°
  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 67. West southwest wind 7 to 12 mph.
Night: Mostly clear, with a low around 46.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
66°19°–67°19°
Low, likely
46°8°–52°11°
Typical high / low
71°22° / 52°11°
Wind
12 mph19 km/h, gusts 22 mph35 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 66°19°, low 47°8°. Typical 71°22° / 52°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 66.
Night: Partly cloudy, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–68°20°
Low, likely
46°8°–52°11°
Typical high / low
71°22° / 52°11°
Wind
10 mph16 km/h
UV peak
5
Wednesday, Oct 28. Cloudy. High 65°18°, low 49°9°. Typical 71°22° / 52°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 54°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 65.
Night: Mostly cloudy, with a low around 49.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–67°19°
Low, likely
48°9°–51°11°
Typical high / low
71°22° / 52°11°
Wind
8 mph13 km/h
UV peak
4
Thursday, Oct 29. Rain. High 63°17°, low 48°9°. Typical 70°21° / 52°11°. Rain, 20% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain after 5pm. Partly sunny, with a high near 63.
Night: A chance of rain. Partly cloudy, with a low around 48.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
62°17°–64°18°
Low, likely
48°9°–55°13°
Typical high / low
70°21° / 52°11°
Wind
12 mph19 km/h, gusts 24 mph39 km/h
UV peak
4
Friday, Oct 30. Rain. High 62°17°, low 48°9°. Typical 70°21° / 52°11°. Rain 0.01 in0.3 mm, 30% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 62°17°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 56°13°
  20% chance
4. Overnight
  midnight–6 AM
  Partly cloudy, 47°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Partly sunny, with a high near 62.
Night: A chance of rain. Mostly cloudy, with a low around 48.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
61°16°–63°17°
Low, likely
44°7°–50°10°
Typical high / low
70°21° / 52°11°
Wind
9 mph14 km/h, gusts 21 mph33 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 63°17°, low 47°8°. Typical 70°21° / 52°11°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°8°
  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
61°16°–68°20°
Low, likely
38°3°–53°12°
Typical high / low
70°21° / 52°11°
Wind
7 mph11 km/h, gusts 18 mph29 km/h
UV peak
4
Sunday, Nov 1. Sunny. High 66°19°, low 46°8°. Typical 69°21° / 51°11°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°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
60°16°–71°22°
Low, likely
38°3°–53°12°
Typical high / low
69°21° / 51°11°
Wind
9 mph15 km/h, gusts 22 mph36 km/h
UV peak
4
Monday, Nov 2. Cloudy. High 66°19°, low 52°11°. Typical 69°21° / 51°11°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 53°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  Dry
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
61°16°–72°22°
Low, likely
46°8°–61°16°
Typical high / low
69°21° / 51°11°
Wind
9 mph15 km/h, gusts 22 mph35 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 72°, low 47°.
Tomorrow
Dry, high 71°, low 49°.
Monday
Dry, high 67°, low 46°, cooling off.
Rest of week
Mostly dry, highs 62–66°.

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

Martinez

2.8 mi

Level: 2.8 ft

Reading from Sat 7:15 AM · NWS gauge page

Alhambra Creek at Ward St

3.3 mi

Level: 0.0 ft

Reading from Sat 7:15 AM · NWS gauge page

Alhambra Creek at D Street

4.2 mi

Level: 0.3 ft

Reading from Sat 7:15 AM · NWS gauge page

Pinole Creek at San Pablo Avenue

6.3 mi

Level: 0.7 ft

Reading from Sat 7:15 AM · NWS gauge page

For your home

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

Heating this week

About 36% less heating than a typical week.

This week 16Typical 25

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 43°F).

Open the windows?

Today, 11:00 AM–7:00 PM

Good stretch to open the windows.

Is this typical?

RICHMOND · official normals 1991–2020 · records 1950–2026

Oct 24, today vs a typical year

Today’s expected high is about typical for the date.

Last 7 days vs normal

On average 1° colder than normal (daily mean temperature).

—SunOct 18
−1°MonOct 19
−2°−1°TueOct 20
—WedOct 21
—ThuOct 22
−1°FriOct 23
—SatOct 24

Port Costa weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 52 min; Losing 2 min 11 s a day; shortest Dec 21, 1 h 21 min less
Golden hour: 5:42–6:35 PM; Morning 7:09–8:02 AM
Blue hour: 6:35–6:45 PM; Morning 6:59–7:09 AM; first light 6:59 AM

Stars tonight? Fair

Mostly clear 6:45 PM–2 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:48 AM · rises 5:18 PM
Full moon: Oct 25
New moon: Nov 8

Looking southeast from Port Costa. The highest point on the skyline is about 3,700 ft, 19 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Port Costa, CA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Martinez

Alhambra Creek at Ward St

Alhambra Creek at D Street

Pinole Creek at San Pablo Avenue

For your home

Heating this week

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon