Monthly outlook for Winterhaven, CA: average high 107.7°, average low 85°. That is 1.9° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 2 days and 0.3 inches. The warmest day looks like 8 August (111.1°), the coolest 15 August (82.3°).
107.7°/85°
Average high / low
+1.9°
Above normal
0 / 2
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
106.7°
104.6°
+1.2°
18 August – 27 August
109.4°
103.9°
+3.1°
28 August – 6 September
at normal
103.6°
—
August records over 66 years
118°28 August 2023All-time high
68.4°23 August 1968All-time low
Climate normals and records are computed from the nearest reference point — Yuma (11 mi).
Sun, 09107° / 88°0
107 °
Winterhaven, Sunday, 9 August
Clear. High 107°, low 88°.
Pressure29.77 inHg
Wind10.6 mph S
Humidity27%
Visibility6.2 mi
Dew point66°
Mon, 10108° / 84°0
108 °
Winterhaven, Monday, 10 August
Clear. High 108°, low 84°.
Pressure29.83 inHg
Wind12.1 mph S
Humidity31%
Visibility6.2 mi
Dew point67°
Tue, 11104° / 87°0
104 °
Winterhaven, Tuesday, 11 August
Light rain. High 104°, low 87°.
Pressure29.85 inHg
Wind14.4 mph S
Humidity31%
Visibility6.2 mi
Dew point66°
Wed, 12106° / 84°0.01
106 °
Winterhaven, Wednesday, 12 August
Light rain. High 106°, low 84°.
Pressure29.77 inHg
Wind10.7 mph S
Humidity27%
Visibility6.2 mi
Dew point62°
Thu, 13106° / 84°0
106 °
Winterhaven, Thursday, 13 August
Clear. High 106°, low 84°.
Pressure29.77 inHg
Wind16.4 mph SE
Humidity29%
Visibility—
Dew point59°
Fri, 14106° / 84°0
106 °
Winterhaven, Friday, 14 August
Clear. High 106°, low 84°.
Pressure29.85 inHg
Wind12.3 mph S
Humidity27%
Visibility—
Dew point57°
Sat, 15108° / 82°0
108 °
Winterhaven, Saturday, 15 August
Clear. High 108°, low 82°.
Pressure29.88 inHg
Wind9.8 mph S
Humidity23%
Visibility—
Dew point54°
Sun, 16104° / 84°0
104 °
Winterhaven, Sunday, 16 August
Overcast. High 104°, low 84°.
Pressure29.91 inHg
Wind16.2 mph SE
Humidity36%
Visibility—
Dew point65°
Mon, 17107° / 84°0
107 °
Winterhaven, Monday, 17 August
Partly cloudy. High 107°, low 84°.
Pressure29.94 inHg
Wind7.8 mph S
Humidity33%
Visibility—
Dew point63°
Tue, 18111° / 88°0
111 °
Winterhaven, Tuesday, 18 August
Mostly clear. High 111°, low 88°.
Pressure29.85 inHg
Wind12.2 mph S
Humidity23%
Visibility—
Dew point58°
Wed, 19110° / 88°0
110 °
Winterhaven, Wednesday, 19 August
Clear. High 110°, low 88°.
Pressure29.80 inHg
Wind13.8 mph S
Humidity22%
Visibility—
Dew point56°
Thu, 20109° / 85°0
109 °
Winterhaven, Thursday, 20 August
Overcast. High 109°, low 85°.
Pressure29.83 inHg
Wind14 mph S
Humidity30%
Visibility—
Dew point62°
Fri, 21109° / 83°0
109 °
Winterhaven, Friday, 21 August
Overcast. High 109°, low 83°.
Pressure29.80 inHg
Wind13.9 mph S
Humidity21%
Visibility—
Dew point53°
Sat, 22109° / 87°0.01
109 °
Winterhaven, Saturday, 22 August
Light rain. High 109°, low 87°.
Pressure29.80 inHg
Wind14.7 mph S
Humidity18%
Visibility—
Dew point49°
Sun, 23108° / 84°0.01
108 °
Winterhaven, Sunday, 23 August
Light rain. High 108°, low 84°.
Pressure29.83 inHg
Wind14 mph S
Humidity21%
Visibility—
Dew point53°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 24104° / 82°0.03
104 °
Winterhaven, Monday, 24 August
Climate normal for this date — 60-year average.
Average high104°
Average low82°
Average precipitation0.03 in
Chance of precipitation15%
Record high116° (1985)
Record low71° (1983)
Tue, 25103° / 82°0.04
103 °
Winterhaven, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high103°
Average low82°
Average precipitation0.04 in
Chance of precipitation17%
Record high115° (2020)
Record low70° (1983)
Wed, 26104° / 82°0.02
104 °
Winterhaven, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high104°
Average low82°
Average precipitation0.02 in
Chance of precipitation15%
Record high115° (2020)
Record low74° (1992)
Thu, 27105° / 82°0.01
105 °
Winterhaven, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high105°
Average low82°
Average precipitation0.01 in
Chance of precipitation8%
Record high116° (2023)
Record low72° (1973)
Fri, 28105° / 82°0.01
105 °
Winterhaven, Friday, 28 August
Climate normal for this date — 60-year average.
Average high105°
Average low82°
Average precipitation0.01 in
Chance of precipitation8%
Record high118° (2023)
Record low73° (1972)
Sat, 29105° / 82°0.02
105 °
Winterhaven, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high105°
Average low82°
Average precipitation0.02 in
Chance of precipitation10%
Record high114° (2023)
Record low73° (1973)
Sun, 30105° / 82°0.02
105 °
Winterhaven, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high105°
Average low82°
Average precipitation0.02 in
Chance of precipitation10%
Record high114° (1998)
Record low69° (2010)
Mon, 31105° / 82°0.01
105 °
Winterhaven, Monday, 31 August
Climate normal for this date — 60-year average.
Average high105°
Average low82°
Average precipitation0.01 in
Chance of precipitation7%
Record high112° (2002)
Record low71° (1992)
Tue, 01103° / 82°0.02
103 °
Winterhaven, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high103°
Average low82°
Average precipitation0.02 in
Chance of precipitation12%
Record high114° (2007)
Record low68° (1966)
Wed, 02103° / 81°0.01
103 °
Winterhaven, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high103°
Average low81°
Average precipitation0.01 in
Chance of precipitation8%
Record high114° (1982)
Record low69° (2000)
Thu, 03103° / 81°0.01
103 °
Winterhaven, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high103°
Average low81°
Average precipitation0.01 in
Chance of precipitation7%
Record high112° (2010)
Record low69° (1999)
Fri, 04103° / 80°0.03
103 °
Winterhaven, Friday, 4 September
Climate normal for this date — 60-year average.
Average high103°
Average low80°
Average precipitation0.03 in
Chance of precipitation15%
Record high114° (2020)
Record low67° (1985)
Sat, 05103° / 81°0.02
103 °
Winterhaven, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high103°
Average low81°
Average precipitation0.02 in
Chance of precipitation12%
Record high119° (2020)
Record low67° (1985)
Sun, 06102° / 81°0.02
102 °
Winterhaven, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high102°
Average low81°
Average precipitation0.02 in
Chance of precipitation13%
Record high115° (2020)
Record low70° (2023)
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 Winterhaven, 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 Winterhaven, 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.