Current Weather Forecast for Port Costa

CA 94569  |   12:07pm

Weather Conditions

80°

Feels Like 81°

Sunny

57° 86° HEAT ADVISORY

HEAT ADVISORY

5

UV Index

Good

Air Quality

ENE 8 mph

Wind

0 in

rain

Today

Tue 3/17

86°

Highest Temperature

Plenty of sunshine. Near record high temperatures. High 86F. Winds NE at 5 to 10 mph.

Tonight

Tue 3/17

53°

Lowest Temperature

5%

Mainly clear. Low 53F. Winds light and variable.

Tomorrow

Wed 3/18

87°

Highest Temperature

5%

Partly cloudy skies. Near record high temperatures. High 87F. Winds light and variable.

Next 12 Hours Next 7 Days

Next 12 Hours Forecast in Port Costa

Hourly Weather Forecast & Temperature

1PM

82°

Feels Like 82°

HEAT ADVISORY

Sunny

ENE 8 mph

Wind

1017 mb

Pressure

39%

Humidity

5

UV Index

10mi

Visibility

18%

Cloud Cover

2PM

84°

Feels Like 84°

HEAT ADVISORY

Mostly Sunny

NE 8 mph

Wind

1016 mb

Pressure

37%

Humidity

5

UV Index

10mi

Visibility

29%

Cloud Cover

3PM

86°

Feels Like 86°

HEAT ADVISORY

Sunny

NE 7 mph

Wind

1015 mb

Pressure

34%

Humidity

4

UV Index

10mi

Visibility

5%

Cloud Cover

4PM

83°

Feels Like 83°

HEAT ADVISORY

Sunny

NE 6 mph

Wind

1014 mb

Pressure

37%

Humidity

3

UV Index

10mi

Visibility

2%

Cloud Cover

5PM

83°

Feels Like 83°

HEAT ADVISORY

Mostly Sunny

NE 5 mph

Wind

1014 mb

Pressure

36%

Humidity

1

UV Index

10mi

Visibility

20%

Cloud Cover

6PM

82°

Feels Like 82°

HEAT ADVISORY

Partly Cloudy

NE 4 mph

Wind

1014 mb

Pressure

40%

Humidity

0

UV Index

10mi

Visibility

31%

Cloud Cover

7PM

1%

77°

Feels Like 77°

HEAT ADVISORY

Mostly Sunny

WNW 4 mph

Wind

1014 mb

Pressure

47%

Humidity

0

UV Index

10mi

Visibility

29%

Cloud Cover

8PM

1%

72°

Feels Like 72°

HEAT ADVISORY

Mostly Clear

W 3 mph

Wind

1015 mb

Pressure

57%

Humidity

0

UV Index

10mi

Visibility

28%

Cloud Cover

9PM

1%

69°

Feels Like 69°

HEAT ADVISORY

Mostly Clear

W 3 mph

Wind

1015 mb

Pressure

61%

Humidity

0

UV Index

10mi

Visibility

21%

Cloud Cover

10PM

1%

66°

Feels Like 66°

HEAT ADVISORY

Mostly Clear

WNW 3 mph

Wind

1015 mb

Pressure

66%

Humidity

0

UV Index

10mi

Visibility

20%

Cloud Cover

11PM

2%

64°

Feels Like 64°

HEAT ADVISORY

Clear

WSW 3 mph

Wind

1016 mb

Pressure

69%

Humidity

0

UV Index

10mi

Visibility

9%

Cloud Cover

12AM

2%

62°

Feels Like 62°

HEAT ADVISORY

Clear

SW 2 mph

Wind

1016 mb

Pressure

76%

Humidity

0

UV Index

10mi

Visibility

8%

Cloud Cover

Tue 3/17

Tue

57°

86°

HEAT ADVISORY

More sun than clouds. Highs in the mid 80s and lows in the low 50s.

86°

Feels Like

NE 7 mph

Wind

42%

Humidity

5

UV Index

7:16 AM

Sunrise

7:17 PM

Sunset

Wed 3/18

Wed

5%

53°

87°

HEAT ADVISORY

Partly cloudy. Highs in the upper 80s and lows in the low 50s.

87°

Feels Like

NE 5 mph

Wind

58%

Humidity

6

UV Index

7:14 AM

Sunrise

7:18 PM

Sunset

Thu 3/19

Thu

5%

53°

86°

HEAT ADVISORY

Mainly sunny. Highs in the mid 80s and lows in the mid 50s.

86°

Feels Like

N 5 mph

Wind

56%

Humidity

6

UV Index

7:13 AM

Sunrise

7:19 PM

Sunset

Fri 3/20

Fri

5%

55°

88°

HEAT ADVISORY

Sunshine. Highs in the upper 80s and lows in the mid 50s.

88°

Feels Like

N 6 mph

Wind

50%

Humidity

6

UV Index

7:11 AM

Sunrise

7:20 PM

Sunset

Sat 3/21

Sat

4%

56°

81°

Considerable cloudiness. Highs in the low 80s and lows in the low 50s.

81°

Feels Like

WSW 11 mph

Wind

55%

Humidity

5

UV Index

7:10 AM

Sunrise

7:21 PM

Sunset

Sun 3/22

Sun

4%

52°

79°

Times of sun and clouds. Highs in the upper 70s and lows in the low 50s.

79°

Feels Like

WSW 10 mph

Wind

55%

Humidity

6

UV Index

7:08 AM

Sunrise

7:22 PM

Sunset

Mon 3/23

Mon

3%

51°

75°

Mostly cloudy. Highs in the mid 70s and lows in the low 50s.

75°

Feels Like

SW 10 mph

Wind

54%

Humidity

5

UV Index

7:07 AM

Sunrise

7:23 PM

Sunset

Tue 3/24

Tue

4%

52°

74°

More clouds than sun. Highs in the mid 70s and lows in the low 50s.

74°

Feels Like

WSW 11 mph

Wind

53%

Humidity

5

UV Index

7:05 AM

Sunrise

7:24 PM

Sunset

Need to see beyond 12 Hours?

Find more forecast on the FREE FOX WEATHER App

GO TO APP STORE

Latest Stories from California

Unprecedented heat wave expected to shatter records across Southwest as extreme heat warnings persist

An unprecedented spring heat wave has begun in the Southwest, one that is likely to rewrite the record books and set dozens of new temperature records for March and possibly even April.

46 mins ago

Southwest facing record heat spring temperatures as East returns to more chilly conditions, snow

The Southwestern U.S. is about to see potential record-breaking heat for March this weekend, as the East begins to cool down after recent unseasonable warmth.

Allergy season is worse than ever. Here are the 10 worst allergy capitals in the US for 2026

Allergy sufferers in the U.S. might've felt it for a while, but a new report shows that pollen allergy season is more intense and longer-lasting than ever.

See when and where rare superblooms are happening with this interactive map

A newly released superbloom forecast is giving people the opportunity to see when and where blooms will be at their best in California.

Load More Stories