Monthly outlook for Shasta Retreat, CA: average high 91.5°, average low 64.5°. That is 3.2° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 1 days and 0.4 inches. The warmest day looks like 23 August (102.3°), the coolest 9 August (54.2°).
91.5°/64.5°
Average high / low
+3.2°
Above normal
0 / 1
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
86.6°
87°
-0.3°
19 August – 28 August
99.7°
83.6°
+8.9°
29 August – 7 September
at normal
82.9°
—
August records over 66 years
104.5°8 August 1981All-time high
40.1°20 August 1968All-time low
Climate normals and records are computed from the nearest reference point — Mount Shasta (6 mi).
Mon, 1091° / 55°0
91 °
Shasta Retreat, Monday, 10 August
Clear. High 91°, low 55°.
Pressure29.85 inHg
Wind6.4 mph S
Humidity12%
Visibility6.2 mi
Dew point31°
Tue, 1192° / 64°0
92 °
Shasta Retreat, Tuesday, 11 August
Clear. High 92°, low 64°.
Pressure29.91 inHg
Wind7.8 mph S
Humidity11%
Visibility6.2 mi
Dew point26°
Wed, 1290° / 63°0
90 °
Shasta Retreat, Wednesday, 12 August
Clear. High 90°, low 63°.
Pressure29.83 inHg
Wind7.4 mph S
Humidity14%
Visibility6.2 mi
Dew point32°
Thu, 1384° / 61°0
84 °
Shasta Retreat, Thursday, 13 August
Clear. High 84°, low 61°.
Pressure29.77 inHg
Wind9.8 mph S
Humidity17%
Visibility—
Dew point33°
Fri, 1483° / 58°0
83 °
Shasta Retreat, Friday, 14 August
Clear. High 83°, low 58°.
Pressure29.88 inHg
Wind9.1 mph S
Humidity19%
Visibility—
Dew point35°
Sat, 1583° / 57°0
83 °
Shasta Retreat, Saturday, 15 August
Mostly clear. High 83°, low 57°.
Pressure29.97 inHg
Wind9.2 mph S
Humidity18%
Visibility—
Dew point33°
Sun, 1674° / 60°0.04
74 °
Shasta Retreat, Sunday, 16 August
Light rain. High 74°, low 60°.
Pressure30.12 inHg
Wind7.4 mph S
Humidity40%
Visibility—
Dew point45°
Mon, 1785° / 58°0
85 °
Shasta Retreat, Monday, 17 August
Mostly clear. High 85°, low 58°.
Pressure30.06 inHg
Wind9.3 mph S
Humidity27%
Visibility—
Dew point45°
Tue, 1890° / 62°0
90 °
Shasta Retreat, Tuesday, 18 August
Clear. High 90°, low 62°.
Pressure30.03 inHg
Wind7.7 mph S
Humidity18%
Visibility—
Dew point38°
Wed, 1997° / 68°0
97 °
Shasta Retreat, Wednesday, 19 August
Mostly clear. High 97°, low 68°.
Pressure29.97 inHg
Wind7.5 mph S
Humidity15%
Visibility—
Dew point39°
Thu, 2099° / 72°0
99 °
Shasta Retreat, Thursday, 20 August
Clear. High 99°, low 72°.
Pressure29.91 inHg
Wind8.1 mph S
Humidity15%
Visibility—
Dew point41°
Fri, 21100° / 73°0
100 °
Shasta Retreat, Friday, 21 August
Mostly clear. High 100°, low 73°.
Pressure29.85 inHg
Wind8.6 mph S
Humidity13%
Visibility—
Dew point38°
Sat, 2299° / 73°0
99 °
Shasta Retreat, Saturday, 22 August
Clear. High 99°, low 73°.
Pressure29.94 inHg
Wind8 mph S
Humidity13%
Visibility—
Dew point37°
Sun, 23102° / 75°0
102 °
Shasta Retreat, Sunday, 23 August
Partly cloudy. High 102°, low 75°.
Pressure29.97 inHg
Wind8.4 mph S
Humidity9%
Visibility—
Dew point31°
Mon, 24101° / 77°0
101 °
Shasta Retreat, Monday, 24 August
Clear. High 101°, low 77°.
Pressure29.91 inHg
Wind8.9 mph S
Humidity12%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 58°0.03
82 °
Shasta Retreat, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low58°
Average precipitation0.03 in
Chance of precipitation13%
Record high96° (2010)
Record low41° (2024)
Wed, 2683° / 57°0.02
83 °
Shasta Retreat, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low57°
Average precipitation0.02 in
Chance of precipitation8%
Record high96° (1999)
Record low46° (1976)
Thu, 2784° / 57°0
84 °
Shasta Retreat, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high96° (2019)
Record low47° (1960)
Fri, 2884° / 58°0.02
84 °
Shasta Retreat, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low58°
Average precipitation0.02 in
Chance of precipitation8%
Record high96° (1988)
Record low49° (1968)
Sat, 2984° / 58°0.02
84 °
Shasta Retreat, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high84°
Average low58°
Average precipitation0.02 in
Chance of precipitation13%
Record high96° (2008)
Record low46° (2010)
Sun, 3082° / 57°0.03
82 °
Shasta Retreat, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low57°
Average precipitation0.03 in
Chance of precipitation15%
Record high94° (1987)
Record low47° (1966)
Mon, 3183° / 56°0.02
83 °
Shasta Retreat, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low56°
Average precipitation0.02 in
Chance of precipitation5%
Record high97° (1998)
Record low43° (1999)
Tue, 0183° / 56°0.05
83 °
Shasta Retreat, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high83°
Average low56°
Average precipitation0.05 in
Chance of precipitation7%
Record high99° (1998)
Record low43° (2008)
Wed, 0283° / 57°0.02
83 °
Shasta Retreat, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high83°
Average low57°
Average precipitation0.02 in
Chance of precipitation12%
Record high100° (1998)
Record low40° (1964)
Thu, 0383° / 57°0.01
83 °
Shasta Retreat, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low57°
Average precipitation0.01 in
Chance of precipitation5%
Record high99° (1988)
Record low43° (2000)
Fri, 0484° / 57°0.01
84 °
Shasta Retreat, Friday, 4 September
Climate normal for this date — 60-year average.
Average high84°
Average low57°
Average precipitation0.01 in
Chance of precipitation7%
Record high98° (1988)
Record low44° (2023)
Sat, 0583° / 57°0.01
83 °
Shasta Retreat, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high83°
Average low57°
Average precipitation0.01 in
Chance of precipitation3%
Record high98° (2022)
Record low40° (2000)
Sun, 0682° / 57°0.03
82 °
Shasta Retreat, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high82°
Average low57°
Average precipitation0.03 in
Chance of precipitation7%
Record high100° (2020)
Record low43° (2000)
Mon, 0782° / 56°0.05
82 °
Shasta Retreat, Monday, 7 September
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0.05 in
Chance of precipitation8%
Record high98° (2020)
Record low42° (1978)
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 Shasta Retreat, 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 Shasta Retreat, 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.