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As of 05:03 PDT

Weather in St. Helena, CA

56°Current weather

St. Helena, Sunday, 9 August, 05:03

Clear. Feels like 55°. High 93°, low 56°.

Pressure29.83 inHg
Wind0.9 mph NW
Humidity85%
Visibility6.2 mi
Dew point51°

10-day forecast for St. Helena, CA: 51° to 98°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.

98°
Best day: Tuesday, August 11
78°
Worst day: Monday, August 17

Tap any day below to see morning, afternoon, evening and overnight.

Mon, 1092° / 56°0Partly cloudy
MorningOvercast62°feels 60°
AfternoonPartly cloudy85°feels 82°
EveningMostly clear74°feels 73°
OvernightClear57°feels 56°
92 °Partly cloudy

St. Helena, Monday, 10 August

Partly cloudy. High 92°, low 56°.

Pressure29.83 inHg
Wind5.2 mph S
Humidity17%
Visibility6.2 mi
Dew point43°
Tue, 1198° / 57°0Clear
MorningClear68°feels 67°
AfternoonClear98°feels 93°
EveningClear72°feels 71°
OvernightClear57°feels 56°
98 °Clear

St. Helena, Tuesday, 11 August

Clear. High 98°, low 57°.

Pressure29.88 inHg
Wind5.4 mph S
Humidity20%
Visibility6.2 mi
Dew point44°
Wed, 1290° / 55°0Partly cloudy
MorningOvercast65°feels 63°
AfternoonPartly cloudy90°feels 87°
EveningClear69°feels 68°
OvernightOvercast57°feels 56°
90 °Partly cloudy

St. Helena, Wednesday, 12 August

Partly cloudy. High 90°, low 55°.

Pressure29.83 inHg
Wind6.5 mph S
Humidity28%
Visibility6.2 mi
Dew point47°
Thu, 1385° / 51°0Partly cloudy
MorningPartly cloudy66°feels 65°
AfternoonPartly cloudy81°feels 79°
EveningPartly cloudy63°feels 62°
OvernightClear53°feels 52°
85 °Partly cloudy

St. Helena, Thursday, 13 August

Partly cloudy. High 85°, low 51°.

Pressure29.83 inHg
Wind11.3 mph SW
Humidity30%
Visibility—
Dew point47°
Fri, 1489° / 53°0Clear
MorningClear68°feels 67°
AfternoonClear85°feels 82°
EveningClear64°feels 63°
OvernightClear57°feels 57°
89 °Clear

St. Helena, Friday, 14 August

Clear. High 89°, low 53°.

Pressure29.88 inHg
Wind7.9 mph W
Humidity26%
Visibility—
Dew point46°
Sat, 1590° / 53°0Overcast
MorningOvercast69°feels 68°
AfternoonOvercast86°feels 83°
EveningOvercast65°feels 64°
OvernightOvercast62°feels 62°
90 °Overcast

St. Helena, Saturday, 15 August

Overcast. High 90°, low 53°.

Pressure29.94 inHg
Wind8.1 mph SW
Humidity22%
Visibility—
Dew point42°
Sun, 1688° / 55°0Overcast
MorningOvercast71°feels 69°
AfternoonOvercast84°feels 82°
EveningOvercast62°feels 61°
OvernightOvercast57°feels 56°
88 °Overcast

St. Helena, Sunday, 16 August

Overcast. High 88°, low 55°.

Pressure30.03 inHg
Wind9.4 mph W
Humidity29%
Visibility—
Dew point49°
Mon, 1778° / 53°0Overcast
MorningOvercast65°feels 64°
AfternoonOvercast75°feels 74°
EveningOvercast60°feels 60°
OvernightOvercast56°feels 55°
78 °Overcast

St. Helena, Monday, 17 August

Overcast. High 78°, low 53°.

Pressure30.06 inHg
Wind9.8 mph SW
Humidity36%
Visibility—
Dew point46°
Tue, 1882° / 53°0Overcast
MorningOvercast68°feels 67°
AfternoonOvercast79°feels 79°
EveningOvercast65°feels 65°
OvernightOvercast61°feels 61°
82 °Overcast

St. Helena, Tuesday, 18 August

Overcast. High 82°, low 53°.

Pressure29.97 inHg
Wind10.9 mph SW
Humidity43%
Visibility—
Dew point55°

About this forecast

How reliable is a 10-day forecast?

The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.

What does the time-of-day table show?

Temperature in St. Helena, CA around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.

How is the best day chosen?

We weigh the daytime high against precipitation: a warm, dry day scores highest.