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As of 10:13 PDT

Weather in Port Costa, CA

76°Current weather

Port Costa, Sunday, 9 August, 10:13

Clear. Feels like 77°. High 88°, low 61°.

Pressure29.85 inHg
Wind18 mph SE
Humidity59%
Visibility6.2 mi
Dew point61°

Two-week outlook for Port Costa, CA: week one averages a high of 77.5° and week two 85.4°, so week two runs 8° warmer than week one. Around 0.0 inches of precipitation are expected over the 14 days, across 0 wet days. The nearest weekend, August 9: 88°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (August 9 – August 15)77.5°59.9°0.0 in / 0 d—
2nd (August 16 – August 22)85.4°64.2°0.0 in / 0 d—

Weekend weather

Sun, August 9
Clear
88°61°
no precip.
Sat, August 15
Clear
75°60°
no precip.
Sun, August 16
Overcast
77°61°
no precip.
Sat, August 22
Clear
93°67°
no precip.
Mon, 1083° / 59°0Partly cloudy
83 °Partly cloudy

Port Costa, Monday, 10 August

Partly cloudy. High 83°, low 59°.

Pressure29.88 inHg
Wind10.8 mph SW
Humidity49%
Visibility6.2 mi
Dew point52°
Tue, 1177° / 60°0Clear
77 °Clear

Port Costa, Tuesday, 11 August

Clear. High 77°, low 60°.

Pressure29.94 inHg
Wind8.3 mph SW
Humidity45%
Visibility6.2 mi
Dew point52°
Wed, 1274° / 60°0Clear
74 °Clear

Port Costa, Wednesday, 12 August

Clear. High 74°, low 60°.

Pressure29.85 inHg
Wind10.2 mph SW
Humidity51%
Visibility6.2 mi
Dew point53°
Thu, 1372° / 60°0Partly cloudy
72 °Partly cloudy

Port Costa, Thursday, 13 August

Partly cloudy. High 72°, low 60°.

Pressure29.85 inHg
Wind15.1 mph SW
Humidity54%
Visibility—
Dew point53°
Fri, 1474° / 60°0Clear
74 °Clear

Port Costa, Friday, 14 August

Clear. High 74°, low 60°.

Pressure29.91 inHg
Wind14.1 mph SW
Humidity48%
Visibility—
Dew point52°
Sat, 1575° / 60°0Clear
75 °Clear

Port Costa, Saturday, 15 August

Clear. High 75°, low 60°.

Pressure30.00 inHg
Wind12.5 mph SW
Humidity47%
Visibility—
Dew point51°
Sun, 1677° / 61°0Overcast
77 °Overcast

Port Costa, Sunday, 16 August

Overcast. High 77°, low 61°.

Pressure30.12 inHg
Wind7.1 mph SW
Humidity55%
Visibility—
Dew point52°
Mon, 1785° / 63°0Overcast
85 °Overcast

Port Costa, Monday, 17 August

Overcast. High 85°, low 63°.

Pressure30.06 inHg
Wind8.8 mph SW
Humidity31%
Visibility—
Dew point49°
Tue, 1883° / 64°0Clear
83 °Clear

Port Costa, Tuesday, 18 August

Clear. High 83°, low 64°.

Pressure30.00 inHg
Wind8.8 mph SW
Humidity34%
Visibility—
Dew point50°
Wed, 1986° / 65°0Clear
86 °Clear

Port Costa, Wednesday, 19 August

Clear. High 86°, low 65°.

Pressure29.94 inHg
Wind7.7 mph SW
Humidity30%
Visibility—
Dew point48°
Thu, 2084° / 64°0Overcast
84 °Overcast

Port Costa, Thursday, 20 August

Overcast. High 84°, low 64°.

Pressure29.88 inHg
Wind8.9 mph SW
Humidity32%
Visibility—
Dew point49°
Fri, 2189° / 65°0Clear
89 °Clear

Port Costa, Friday, 21 August

Clear. High 89°, low 65°.

Pressure29.83 inHg
Wind7.2 mph SW
Humidity27%
Visibility—
Dew point48°
Sat, 2293° / 67°0Clear
93 °Clear

Port Costa, Saturday, 22 August

Clear. High 93°, low 67°.

Pressure29.85 inHg
Wind6.6 mph SW
Humidity22%
Visibility—
Dew point46°

About this forecast

Can I plan a trip on a 2-week forecast?

Week one is solid for planning — accuracy is high. Week two shows the trend: go by the averages and the comparison with normal, and check the details closer to the date.

What does the "Vs normal" column mean?

It is the gap between the forecast and the climate normal for those same dates in Port Costa, CA, computed over 60 years. A positive value means the week runs warmer than usual.

Why are weekends shown separately?

Saturday and Sunday plans are what people check most, so we give them their own cards with temperature and precipitation.