As of 23:37 PDT

Weather in Hartley, CA

68°

Hartley, Saturday, 8 August, 23:37

Clear. Feels like 67°. High 91°, low 62°.

Pressure29.80 inHg

Wind7 mph SW

Humidity70%

Visibility6.2 mi

Dew point57°

See detailed hourly forecast

Monthly outlook for Hartley, CA: average high 90.4°, average low 58.4°. That is 0.8° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 0 days and 0.1 inches. The warmest day looks like 9 August (99.2°), the coolest 22 August (54.1°).

90.4°/58.4°

Average high / low

+0.8°

Above normal

0 / 0

Wet days / normal

0.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 August – 17 August	90.8°	90°	+0.5°
18 August – 27 August	89.7°	88°	+1°
28 August – 6 September	at normal	89.6°	—

August records over 66 years

111°17 August 2020All-time high

52°23 August 1973All-time low

Climate normals and records are computed from the nearest reference point — Vacaville (4 mi).

Sun, 0999° / 62°

99 °

Hartley, Sunday, 9 August

Clear. High 99°, low 62°.

Pressure29.80 inHg

Wind0.6 mph SE

Humidity14%

Visibility6.2 mi

Dew point43°

Mon, 1092° / 61°

92 °

Hartley, Monday, 10 August

Mostly clear. High 92°, low 61°.

Pressure29.83 inHg

Wind7 mph S

Humidity17%

Visibility6.2 mi

Dew point42°

Tue, 1198° / 60°

98 °

Hartley, Tuesday, 11 August

Clear. High 98°, low 60°.

Pressure29.88 inHg

Wind6.4 mph S

Humidity18%

Visibility6.2 mi

Dew point43°

Wed, 1293° / 59°

93 °

Hartley, Wednesday, 12 August

Clear. High 93°, low 59°.

Pressure29.80 inHg

Wind7.1 mph S

Humidity24%

Visibility6.2 mi

Dew point46°

Thu, 1386° / 56°

86 °

Hartley, Thursday, 13 August

Overcast. High 86°, low 56°.

Pressure29.80 inHg

Wind11.4 mph SW

Humidity29%

Visibility—

Dew point47°

Fri, 1490° / 57°

90 °

Hartley, Friday, 14 August

Clear. High 90°, low 57°.

Pressure29.88 inHg

Wind12.4 mph SW

Humidity25%

Visibility—

Dew point46°

Sat, 1591° / 57°

91 °

Hartley, Saturday, 15 August

Overcast. High 91°, low 57°.

Pressure29.94 inHg

Wind12 mph SW

Humidity22%

Visibility—

Dew point44°

Sun, 1688° / 62°

88 °

Hartley, Sunday, 16 August

Overcast. High 88°, low 62°.

Pressure30.00 inHg

Wind13.2 mph SW

Humidity28%

Visibility—

Dew point49°

Mon, 1781° / 54°

81 °

Hartley, Monday, 17 August

Overcast. High 81°, low 54°.

Pressure30.03 inHg

Wind12.5 mph SW

Humidity31%

Visibility—

Dew point45°

Tue, 1887° / 56°

87 °

Hartley, Tuesday, 18 August

Overcast. High 87°, low 56°.

Pressure29.94 inHg

Wind14.1 mph SW

Humidity33%

Visibility—

Dew point52°

Wed, 1993° / 61°

93 °

Hartley, Wednesday, 19 August

Clear. High 93°, low 61°.

Pressure29.88 inHg

Wind14.2 mph SW

Humidity28%

Visibility—

Dew point52°

Thu, 2089° / 60°

89 °

Hartley, Thursday, 20 August

Overcast. High 89°, low 60°.

Pressure29.88 inHg

Wind13.5 mph SW

Humidity32%

Visibility—

Dew point53°

Fri, 2189° / 58°

89 °

Hartley, Friday, 21 August

Partly cloudy. High 89°, low 58°.

Pressure29.88 inHg

Wind11.5 mph SW

Humidity19%

Visibility—

Dew point38°

Sat, 2289° / 54°

89 °

Hartley, Saturday, 22 August

Overcast. High 89°, low 54°.

Pressure29.91 inHg

Wind10.1 mph SW

Humidity21%

Visibility—

Dew point40°

Sun, 2391° / 57°

91 °

Hartley, Sunday, 23 August

Mostly clear. High 91°, low 57°.

Pressure29.85 inHg

Wind13.3 mph SW

Humidity19%

Visibility—

Dew point40°

From day 17 onward the outlook is built from 60-year climate statistics

Mon, 2489° / 60°

89 °

Hartley, Monday, 24 August

Climate normal for this date — 60-year average.

Average high89°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high104° (2010)

Record low53° (2021)

Tue, 2588° / 59°

88 °

Hartley, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high88°

Average low59°

Average precipitation0 in

Chance of precipitation0%

Record high106° (1972)

Record low54° (2021)

Wed, 2689° / 59°

89 °

Hartley, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high89°

Average low59°

Average precipitation0 in

Chance of precipitation0%

Record high104° (1988)

Record low54° (1970)

Thu, 2790° / 60°

90 °

Hartley, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high90°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high104° (2017)

Record low53° (2012)

Fri, 2891° / 60°

91 °

Hartley, Friday, 28 August

Climate normal for this date — 60-year average.

Average high91°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high106° (2008)

Record low55° (1995)

Sat, 2989° / 60°

89 °

Hartley, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high89°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high103° (1977)

Record low53° (1980)

Sun, 3089° / 60°

89 °

Hartley, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high89°

Average low60°

Average precipitation0 in

Chance of precipitation3%

Record high103° (2023)

Record low54° (2010)

Mon, 3189° / 60°

89 °

Hartley, Monday, 31 August

Climate normal for this date — 60-year average.

Average high89°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high101° (1998)

Record low54° (1970)

Tue, 0190° / 60°

90 °

Hartley, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high90°

Average low60°

Average precipitation0 in

Chance of precipitation2%

Record high109° (2017)

Record low54° (1964)

Wed, 0290° / 60°

90 °

Hartley, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high90°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high107° (2017)

Record low53° (2021)

Thu, 0390° / 60°

90 °

Hartley, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high90°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high102° (1988)

Record low51° (2000)

Fri, 0490° / 60°

90 °

Hartley, Friday, 4 September

Climate normal for this date — 60-year average.

Average high90°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high107° (2022)

Record low51° (2000)

Sat, 0590° / 60°

90 °

Hartley, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high90°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high115° (2022)

Record low53° (1965)

Sun, 0689° / 60°

89 °

Hartley, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high89°

Average low60°

Average precipitation0 in

Chance of precipitation2%

Record high117° (2022)

Record low53° (1973)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Hartley, CA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Hartley, CA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.