Monthly outlook for Los Medanos, CA: average high 96.7°, average low 66.9°. That is 6.4° 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 23 August (111.3°), the coolest 14 August (59.6°).
96.7°/66.9°
Average high / low
+6.4°
Above normal
0 / 0
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
91°
85.8°
+2.9°
19 August – 28 August
106.3°
84.8°
+11.9°
29 August – 7 September
at normal
86°
—
August records over 66 years
107.6°16 August 2020All-time high
52.3°29 August 1980All-time low
Climate normals and records are computed from the nearest reference point — Antioch (4 mi).
Mon, 1089° / 62°0
89 °
Los Medanos, Monday, 10 August
Overcast. High 89°, low 62°.
Pressure29.83 inHg
Wind7.4 mph NW
Humidity15%
Visibility6.2 mi
Dew point42°
Tue, 1198° / 64°0
98 °
Los Medanos, Tuesday, 11 August
Clear. High 98°, low 64°.
Pressure29.88 inHg
Wind5.5 mph NW
Humidity18%
Visibility6.2 mi
Dew point42°
Wed, 1295° / 63°0
95 °
Los Medanos, Wednesday, 12 August
Clear. High 95°, low 63°.
Pressure29.80 inHg
Wind4.8 mph NW
Humidity21%
Visibility6.2 mi
Dew point45°
Thu, 1385° / 60°0
85 °
Los Medanos, Thursday, 13 August
Overcast. High 85°, low 60°.
Pressure29.80 inHg
Wind13 mph W
Humidity32%
Visibility—
Dew point49°
Fri, 1487° / 60°0
87 °
Los Medanos, Friday, 14 August
Clear. High 87°, low 60°.
Pressure29.88 inHg
Wind12 mph W
Humidity27%
Visibility—
Dew point46°
Sat, 1587° / 60°0
87 °
Los Medanos, Saturday, 15 August
Clear. High 87°, low 60°.
Pressure29.94 inHg
Wind12.6 mph W
Humidity26%
Visibility—
Dew point45°
Sun, 1684° / 62°0
84 °
Los Medanos, Sunday, 16 August
Overcast. High 84°, low 62°.
Pressure30.09 inHg
Wind9.4 mph W
Humidity44%
Visibility—
Dew point50°
Mon, 1794° / 65°0
94 °
Los Medanos, Monday, 17 August
Partly cloudy. High 94°, low 65°.
Pressure30.03 inHg
Wind10.7 mph W
Humidity22%
Visibility—
Dew point46°
Tue, 1898° / 67°0
98 °
Los Medanos, Tuesday, 18 August
Clear. High 98°, low 67°.
Pressure29.97 inHg
Wind13 mph W
Humidity15%
Visibility—
Dew point40°
Wed, 19100° / 69°0.01
100 °
Los Medanos, Wednesday, 19 August
Light rain. High 100°, low 69°.
Pressure29.88 inHg
Wind12.2 mph W
Humidity15%
Visibility—
Dew point41°
Thu, 20102° / 70°0
102 °
Los Medanos, Thursday, 20 August
Overcast. High 102°, low 70°.
Pressure29.83 inHg
Wind12 mph W
Humidity14%
Visibility—
Dew point41°
Fri, 21108° / 71°0
108 °
Los Medanos, Friday, 21 August
Clear. High 108°, low 71°.
Pressure29.77 inHg
Wind12.5 mph W
Humidity12%
Visibility—
Dew point41°
Sat, 22109° / 77°0
109 °
Los Medanos, Saturday, 22 August
Clear. High 109°, low 77°.
Pressure29.83 inHg
Wind13.1 mph W
Humidity11%
Visibility—
Dew point40°
Sun, 23111° / 78°0
111 °
Los Medanos, Sunday, 23 August
Partly cloudy. High 111°, low 78°.
Pressure29.85 inHg
Wind11.9 mph W
Humidity9%
Visibility—
Dew point37°
Mon, 24107° / 78°0
107 °
Los Medanos, Monday, 24 August
Clear. High 107°, low 78°.
Pressure29.83 inHg
Wind13.7 mph W
Humidity11%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2585° / 59°0
85 °
Los Medanos, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low59°
Average precipitation0 in
Chance of precipitation0%
Record high99° (2010)
Record low54° (1960)
Wed, 2685° / 58°0
85 °
Los Medanos, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high85°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high99° (2017)
Record low54° (1970)
Thu, 2786° / 59°0
86 °
Los Medanos, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high86°
Average low59°
Average precipitation0 in
Chance of precipitation0%
Record high103° (2017)
Record low53° (1960)
Fri, 2887° / 60°0
87 °
Los Medanos, Friday, 28 August
Climate normal for this date — 60-year average.
Average high87°
Average low60°
Average precipitation0 in
Chance of precipitation0%
Record high102° (2021)
Record low54° (1960)
Sat, 2985° / 59°0
85 °
Los Medanos, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low59°
Average precipitation0 in
Chance of precipitation0%
Record high99° (2009)
Record low52° (1980)
Sun, 3085° / 60°0
85 °
Los Medanos, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high85°
Average low60°
Average precipitation0 in
Chance of precipitation3%
Record high99° (2025)
Record low53° (2010)
Mon, 3186° / 59°0
86 °
Los Medanos, Monday, 31 August
Climate normal for this date — 60-year average.
Average high86°
Average low59°
Average precipitation0 in
Chance of precipitation0%
Record high100° (2025)
Record low53° (1970)
Tue, 0187° / 59°0
87 °
Los Medanos, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high87°
Average low59°
Average precipitation0 in
Chance of precipitation0%
Record high108° (2017)
Record low53° (1970)
Wed, 0286° / 60°0
86 °
Los Medanos, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high86°
Average low60°
Average precipitation0 in
Chance of precipitation0%
Record high107° (2017)
Record low53° (1960)
Thu, 0386° / 59°0
86 °
Los Medanos, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high86°
Average low59°
Average precipitation0 in
Chance of precipitation0%
Record high102° (2017)
Record low52° (1970)
Fri, 0486° / 59°0
86 °
Los Medanos, Friday, 4 September
Climate normal for this date — 60-year average.
Average high86°
Average low59°
Average precipitation0 in
Chance of precipitation0%
Record high102° (2022)
Record low52° (1960)
Sat, 0586° / 59°0
86 °
Los Medanos, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high86°
Average low59°
Average precipitation0 in
Chance of precipitation2%
Record high110° (2022)
Record low52° (2000)
Sun, 0686° / 59°0
86 °
Los Medanos, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high86°
Average low59°
Average precipitation0 in
Chance of precipitation2%
Record high113° (2022)
Record low53° (1973)
Mon, 0786° / 60°0
86 °
Los Medanos, Monday, 7 September
Climate normal for this date — 60-year average.
Average high86°
Average low60°
Average precipitation0 in
Chance of precipitation0%
Record high111° (2020)
Record low53° (2002)
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 Los Medanos, 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 Los Medanos, 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.