Monthly outlook for Westhaven-Moonstone, CA: average high 63.8°, average low 55.9°. That is 2.9° below the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 1 days and 0.2 inches. The warmest day looks like 10 August (73.5°), the coolest 10 August (54.3°).
63.8°/55.9°
Average high / low
−2.9°
Below 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
64.7°
69.4°
-2.6°
19 August – 28 August
62.4°
69°
-3.6°
29 August – 7 September
at normal
69.5°
—
August records over 66 years
88.5°1 August 1993All-time high
46.8°31 August 2021All-time low
Climate normals and records are computed from the nearest reference point — Blue Lake (13 mi).
Mon, 1074° / 54°0
74 °
Westhaven-Moonstone, Monday, 10 August
Clear. High 74°, low 54°.
Pressure29.91 inHg
Wind6.4 mph NW
Humidity71%
Visibility6.1 mi
Dew point52°
Tue, 1163° / 56°0
63 °
Westhaven-Moonstone, Tuesday, 11 August
Clear. High 63°, low 56°.
Pressure29.94 inHg
Wind5.2 mph NW
Humidity73%
Visibility6.2 mi
Dew point52°
Wed, 1263° / 56°0
63 °
Westhaven-Moonstone, Wednesday, 12 August
Mostly clear. High 63°, low 56°.
Pressure29.85 inHg
Wind8.4 mph NW
Humidity77%
Visibility6.2 mi
Dew point54°
Thu, 1362° / 56°0
62 °
Westhaven-Moonstone, Thursday, 13 August
Clear. High 62°, low 56°.
Pressure29.88 inHg
Wind5.7 mph S
Humidity77%
Visibility—
Dew point55°
Fri, 1463° / 55°0
63 °
Westhaven-Moonstone, Friday, 14 August
Overcast. High 63°, low 55°.
Pressure29.97 inHg
Wind7.8 mph S
Humidity76%
Visibility—
Dew point55°
Sat, 1562° / 56°0
62 °
Westhaven-Moonstone, Saturday, 15 August
Mostly clear. High 62°, low 56°.
Pressure30.03 inHg
Wind5.4 mph SW
Humidity78%
Visibility—
Dew point55°
Sun, 1662° / 55°0
62 °
Westhaven-Moonstone, Sunday, 16 August
Overcast. High 62°, low 55°.
Pressure30.06 inHg
Wind6.8 mph S
Humidity78%
Visibility—
Dew point55°
Mon, 1761° / 56°0
61 °
Westhaven-Moonstone, Monday, 17 August
Overcast. High 61°, low 56°.
Pressure30.12 inHg
Wind5.8 mph SE
Humidity85%
Visibility—
Dew point54°
Tue, 1864° / 60°0.01
64 °
Westhaven-Moonstone, Tuesday, 18 August
Light rain. High 64°, low 60°.
Pressure30.03 inHg
Wind6.6 mph SW
Humidity84%
Visibility—
Dew point56°
Wed, 1965° / 59°0
65 °
Westhaven-Moonstone, Wednesday, 19 August
Overcast. High 65°, low 59°.
Pressure30.00 inHg
Wind4.5 mph W
Humidity84%
Visibility—
Dew point59°
Thu, 2061° / 56°0.02
61 °
Westhaven-Moonstone, Thursday, 20 August
Light rain. High 61°, low 56°.
Pressure30.03 inHg
Wind5.6 mph NE
Humidity93%
Visibility—
Dew point59°
Fri, 2162° / 55°0
62 °
Westhaven-Moonstone, Friday, 21 August
Clear. High 62°, low 55°.
Pressure30.00 inHg
Wind10.7 mph N
Humidity76%
Visibility—
Dew point54°
Sat, 2262° / 55°0
62 °
Westhaven-Moonstone, Saturday, 22 August
Partly cloudy. High 62°, low 55°.
Pressure30.03 inHg
Wind11.8 mph N
Humidity80%
Visibility—
Dew point55°
Sun, 2363° / 55°0
63 °
Westhaven-Moonstone, Sunday, 23 August
Overcast. High 63°, low 55°.
Pressure29.97 inHg
Wind10.5 mph NW
Humidity77%
Visibility—
Dew point54°
Mon, 2461° / 55°0
61 °
Westhaven-Moonstone, Monday, 24 August
Overcast. High 61°, low 55°.
Pressure29.97 inHg
Wind11.8 mph N
Humidity76%
Visibility—
Dew point53°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2569° / 55°0.08
69 °
Westhaven-Moonstone, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high69°
Average low55°
Average precipitation0.08 in
Chance of precipitation10%
Record high83° (2010)
Record low48° (2018)
Wed, 2669° / 54°0.04
69 °
Westhaven-Moonstone, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high69°
Average low54°
Average precipitation0.04 in
Chance of precipitation5%
Record high83° (1972)
Record low49° (2021)
Thu, 2770° / 55°0.01
70 °
Westhaven-Moonstone, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high70°
Average low55°
Average precipitation0.01 in
Chance of precipitation5%
Record high81° (2017)
Record low50° (1963)
Fri, 2870° / 55°0.02
70 °
Westhaven-Moonstone, Friday, 28 August
Climate normal for this date — 60-year average.
Average high70°
Average low55°
Average precipitation0.02 in
Chance of precipitation7%
Record high80° (2004)
Record low49° (1975)
Sat, 2969° / 55°0.03
69 °
Westhaven-Moonstone, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high69°
Average low55°
Average precipitation0.03 in
Chance of precipitation5%
Record high82° (1987)
Record low49° (1975)
Sun, 3068° / 55°0.04
68 °
Westhaven-Moonstone, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high68°
Average low55°
Average precipitation0.04 in
Chance of precipitation8%
Record high87° (1987)
Record low47° (2025)
Mon, 3169° / 54°0.04
69 °
Westhaven-Moonstone, Monday, 31 August
Climate normal for this date — 60-year average.
Average high69°
Average low54°
Average precipitation0.04 in
Chance of precipitation5%
Record high86° (1987)
Record low47° (2021)
Tue, 0170° / 55°0.02
70 °
Westhaven-Moonstone, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high70°
Average low55°
Average precipitation0.02 in
Chance of precipitation7%
Record high89° (2017)
Record low46° (2021)
Wed, 0270° / 55°0.01
70 °
Westhaven-Moonstone, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high70°
Average low55°
Average precipitation0.01 in
Chance of precipitation5%
Record high92° (2017)
Record low46° (2021)
Thu, 0370° / 55°0
70 °
Westhaven-Moonstone, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high70°
Average low55°
Average precipitation0 in
Chance of precipitation5%
Record high84° (2017)
Record low47° (1964)
Fri, 0470° / 54°0.01
70 °
Westhaven-Moonstone, Friday, 4 September
Climate normal for this date — 60-year average.
Average high70°
Average low54°
Average precipitation0.01 in
Chance of precipitation7%
Record high89° (2017)
Record low47° (2021)
Sat, 0569° / 54°0.03
69 °
Westhaven-Moonstone, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high69°
Average low54°
Average precipitation0.03 in
Chance of precipitation5%
Record high83° (2008)
Record low46° (2020)
Sun, 0670° / 54°0
70 °
Westhaven-Moonstone, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high70°
Average low54°
Average precipitation0 in
Chance of precipitation7%
Record high85° (1981)
Record low49° (2001)
Mon, 0769° / 54°0
69 °
Westhaven-Moonstone, Monday, 7 September
Climate normal for this date — 60-year average.
Average high69°
Average low54°
Average precipitation0 in
Chance of precipitation5%
Record high81° (2020)
Record low47° (1960)
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 Westhaven-Moonstone, 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 Westhaven-Moonstone, 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.