Monthly outlook for McSwain, CA: average high 103.1°, average low 66.3°. That is 4.5° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 0 days and 0.0 inches. The warmest day looks like 10 August (112.1°), the coolest 16 August (60.4°).
103.1°/66.3°
Average high / low
+4.5°
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
101.5°
96°
+3°
18 August – 27 August
105.8°
93.4°
+6.9°
28 August – 6 September
at normal
94°
—
August records over 66 years
112.1°7 August 2024All-time high
55.6°20 August 1968All-time low
Climate normals and records are computed from the nearest reference point — Merced (6 mi).
Sun, 09105° / 71°0
105 °
McSwain, Sunday, 9 August
Clear. High 105°, low 71°.
Pressure29.77 inHg
Wind3.9 mph W
Humidity9%
Visibility6.2 mi
Dew point35°
Mon, 10112° / 71°0
112 °
McSwain, Monday, 10 August
Partly cloudy. High 112°, low 71°.
Pressure29.80 inHg
Wind5.6 mph SW
Humidity9%
Visibility6.2 mi
Dew point35°
Tue, 11108° / 67°0
108 °
McSwain, Tuesday, 11 August
Clear. High 108°, low 67°.
Pressure29.85 inHg
Wind5.1 mph SW
Humidity12%
Visibility6.2 mi
Dew point39°
Wed, 12105° / 67°0
105 °
McSwain, Wednesday, 12 August
Mostly clear. High 105°, low 67°.
Pressure29.80 inHg
Wind4.4 mph W
Humidity13%
Visibility6.2 mi
Dew point39°
Thu, 13100° / 64°0
100 °
McSwain, Thursday, 13 August
Overcast. High 100°, low 64°.
Pressure29.77 inHg
Wind14.1 mph W
Humidity16%
Visibility—
Dew point40°
Fri, 1493° / 66°0
93 °
McSwain, Friday, 14 August
Overcast. High 93°, low 66°.
Pressure29.85 inHg
Wind9.4 mph S
Humidity20%
Visibility—
Dew point43°
Sat, 15101° / 61°0
101 °
McSwain, Saturday, 15 August
Clear. High 101°, low 61°.
Pressure29.91 inHg
Wind13.5 mph W
Humidity18%
Visibility—
Dew point44°
Sun, 16102° / 60°0
102 °
McSwain, Sunday, 16 August
Overcast. High 102°, low 60°.
Pressure29.91 inHg
Wind12 mph W
Humidity15%
Visibility—
Dew point39°
Mon, 1790° / 65°0
90 °
McSwain, Monday, 17 August
Overcast. High 90°, low 65°.
Pressure30.00 inHg
Wind10.9 mph NW
Humidity18%
Visibility—
Dew point39°
Tue, 18103° / 70°0
103 °
McSwain, Tuesday, 18 August
Mostly clear. High 103°, low 70°.
Pressure29.91 inHg
Wind11.9 mph NW
Humidity13%
Visibility—
Dew point38°
Wed, 19103° / 66°0
103 °
McSwain, Wednesday, 19 August
Clear. High 103°, low 66°.
Pressure29.85 inHg
Wind10.7 mph NW
Humidity10%
Visibility—
Dew point32°
Thu, 20104° / 62°0
104 °
McSwain, Thursday, 20 August
Clear. High 104°, low 62°.
Pressure29.83 inHg
Wind10.8 mph W
Humidity11%
Visibility—
Dew point33°
Fri, 21107° / 66°0
107 °
McSwain, Friday, 21 August
Clear. High 107°, low 66°.
Pressure29.80 inHg
Wind10.5 mph W
Humidity13%
Visibility—
Dew point40°
Sat, 22110° / 69°0
110 °
McSwain, Saturday, 22 August
Overcast. High 110°, low 69°.
Pressure29.74 inHg
Wind12 mph W
Humidity12%
Visibility—
Dew point40°
Sun, 23107° / 70°0
107 °
McSwain, Sunday, 23 August
Overcast. High 107°, low 70°.
Pressure29.77 inHg
Wind11.2 mph W
Humidity14%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2494° / 66°0
94 °
McSwain, Monday, 24 August
Climate normal for this date — 60-year average.
Average high94°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high106° (2022)
Record low57° (1963)
Tue, 2593° / 66°0
93 °
McSwain, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high93°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high108° (2010)
Record low56° (1963)
Wed, 2694° / 65°0
94 °
McSwain, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high94°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high105° (2019)
Record low59° (1963)
Thu, 2794° / 66°0
94 °
McSwain, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high94°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high105° (2019)
Record low57° (1960)
Fri, 2895° / 66°0
95 °
McSwain, Friday, 28 August
Climate normal for this date — 60-year average.
Average high95°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high108° (2017)
Record low57° (1960)
Sat, 2995° / 67°0
95 °
McSwain, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high95°
Average low67°
Average precipitation0 in
Chance of precipitation0%
Record high108° (2021)
Record low57° (2010)
Sun, 3094° / 66°0
94 °
McSwain, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high94°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high108° (2021)
Record low56° (1966)
Mon, 3194° / 65°0
94 °
McSwain, Monday, 31 August
Climate normal for this date — 60-year average.
Average high94°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high105° (2007)
Record low57° (1964)
Tue, 0194° / 65°0
94 °
McSwain, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high94°
Average low65°
Average precipitation0 in
Chance of precipitation3%
Record high109° (2022)
Record low51° (1964)
Wed, 0294° / 66°0
94 °
McSwain, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high94°
Average low66°
Average precipitation0 in
Chance of precipitation5%
Record high110° (2022)
Record low56° (1964)
Thu, 0394° / 66°0
94 °
McSwain, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high94°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high108° (2022)
Record low55° (1964)
Fri, 0493° / 66°0.01
93 °
McSwain, Friday, 4 September
Climate normal for this date — 60-year average.
Average high93°
Average low66°
Average precipitation0.01 in
Chance of precipitation3%
Record high111° (2022)
Record low56° (2000)
Sat, 0594° / 66°0.02
94 °
McSwain, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high94°
Average low66°
Average precipitation0.02 in
Chance of precipitation3%
Record high112° (2022)
Record low56° (2000)
Sun, 0694° / 66°0.01
94 °
McSwain, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high94°
Average low66°
Average precipitation0.01 in
Chance of precipitation3%
Record high118° (2022)
Record low56° (1964)
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 McSwain, 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 McSwain, 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.