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As of 07:11 PDT

Weather in St. Helena, CA

56°Current weather

St. Helena, Sunday, 9 August, 07:11

Clear. Feels like 55°. High 92°, low 56°.

Pressure29.85 inHg
Wind0.6 mph SE
Humidity89%
Visibility6.2 mi
Dew point52°

Two-week outlook for St. Helena, CA: week one averages a high of 88.9° and week two 100.6°, so week two runs 11.7° 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: 92°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (August 9 – August 15)88.9°54.3°0.0 in / 0 d—
2nd (August 16 – August 22)100.6°64.7°0.0 in / 0 d—

Weekend weather

Sun, August 9
Clear
92°56°
no precip.
Sat, August 15
Clear
89°53°
no precip.
Sun, August 16
Overcast
84°54°
no precip.
Sat, August 22
Mostly clear
109°71°
no precip.
Mon, 1086° / 55°0Clear
86 °Clear

St. Helena, Monday, 10 August

Clear. High 86°, low 55°.

Pressure29.85 inHg
Wind6 mph S
Humidity20%
Visibility6.2 mi
Dew point44°
Tue, 1197° / 56°0Clear
97 °Clear

St. Helena, Tuesday, 11 August

Clear. High 97°, low 56°.

Pressure29.88 inHg
Wind5.1 mph S
Humidity20%
Visibility6.2 mi
Dew point44°
Wed, 1289° / 55°0Clear
89 °Clear

St. Helena, Wednesday, 12 August

Clear. High 89°, low 55°.

Pressure29.83 inHg
Wind6.8 mph S
Humidity29%
Visibility6.2 mi
Dew point48°
Thu, 1382° / 51°0Clear
82 °Clear

St. Helena, Thursday, 13 August

Clear. High 82°, low 51°.

Pressure29.80 inHg
Wind9.6 mph SW
Humidity34%
Visibility—
Dew point48°
Fri, 1487° / 53°0Clear
87 °Clear

St. Helena, Friday, 14 August

Clear. High 87°, low 53°.

Pressure29.88 inHg
Wind7.3 mph SW
Humidity27%
Visibility—
Dew point46°
Sat, 1589° / 53°0Clear
89 °Clear

St. Helena, Saturday, 15 August

Clear. High 89°, low 53°.

Pressure29.94 inHg
Wind8.9 mph W
Humidity23%
Visibility—
Dew point42°
Sun, 1684° / 54°0Overcast
84 °Overcast

St. Helena, Sunday, 16 August

Overcast. High 84°, low 54°.

Pressure30.12 inHg
Wind4.6 mph NW
Humidity42%
Visibility—
Dew point47°
Mon, 1795° / 61°0Overcast
95 °Overcast

St. Helena, Monday, 17 August

Overcast. High 95°, low 61°.

Pressure30.03 inHg
Wind8.2 mph SW
Humidity19%
Visibility—
Dew point44°
Tue, 1898° / 63°0Clear
98 °Clear

St. Helena, Tuesday, 18 August

Clear. High 98°, low 63°.

Pressure29.97 inHg
Wind8.7 mph SW
Humidity17%
Visibility—
Dew point43°
Wed, 19102° / 66°0Clear
102 °Clear

St. Helena, Wednesday, 19 August

Clear. High 102°, low 66°.

Pressure29.91 inHg
Wind8.9 mph SW
Humidity15%
Visibility—
Dew point42°
Thu, 20107° / 68°0Overcast
107 °Overcast

St. Helena, Thursday, 20 August

Overcast. High 107°, low 68°.

Pressure29.85 inHg
Wind8.5 mph SW
Humidity13%
Visibility—
Dew point42°
Fri, 21109° / 69°0Clear
109 °Clear

St. Helena, Friday, 21 August

Clear. High 109°, low 69°.

Pressure29.80 inHg
Wind9.9 mph SW
Humidity12%
Visibility—
Dew point42°
Sat, 22109° / 71°0Mostly clear
109 °Mostly clear

St. Helena, Saturday, 22 August

Mostly clear. High 109°, low 71°.

Pressure29.85 inHg
Wind9.9 mph SW
Humidity11%
Visibility—
Dew point40°

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 St. Helena, 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.