Monthly outlook for Sun City West, AZ: average high 106.8°, average low 88.8°. That is 3.6° above the climate normal for August. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 9 August (120°), the coolest 13 August (80.7°).
106.8°/88.8°
Average high / low
+3.6°
Above normal
3 / 2
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
104.2°
100.7°
+2°
19 August – 28 August
111.1°
100.1°
+6.1°
29 August – 7 September
at normal
99.6°
—
August records over 66 years
115.5°7 August 2025All-time high
60.6°23 August 1968All-time low
Climate normals and records are computed from the nearest reference point — Surprise (5 mi).
Mon, 10115° / 90°0.13
115 °
Sun City West, Monday, 10 August
Rain. High 115°, low 90°.
Pressure29.83 inHg
Wind10.8 mph W
Humidity23%
Visibility6.2 mi
Dew point58°
Tue, 11104° / 87°0.01
104 °
Sun City West, Tuesday, 11 August
Light rain. High 104°, low 87°.
Pressure29.85 inHg
Wind9.4 mph W
Humidity30%
Visibility6.2 mi
Dew point62°
Wed, 1298° / 82°0.3
98 °
Sun City West, Wednesday, 12 August
Rain. High 98°, low 82°.
Pressure29.83 inHg
Wind5.1 mph SW
Humidity33%
Visibility6.2 mi
Dew point60°
Thu, 1395° / 81°0.34
95 °
Sun City West, Thursday, 13 August
Rain. High 95°, low 81°.
Pressure29.83 inHg
Wind11.4 mph N
Humidity51%
Visibility—
Dew point66°
Fri, 1495° / 84°0.01
95 °
Sun City West, Friday, 14 August
Light rain. High 95°, low 84°.
Pressure29.88 inHg
Wind8.3 mph SE
Humidity29%
Visibility—
Dew point55°
Sat, 15100° / 87°0
100 °
Sun City West, Saturday, 15 August
Overcast. High 100°, low 87°.
Pressure29.94 inHg
Wind8.7 mph W
Humidity26%
Visibility—
Dew point54°
Sun, 16103° / 87°0
103 °
Sun City West, Sunday, 16 August
Partly cloudy. High 103°, low 87°.
Pressure29.97 inHg
Wind9.1 mph W
Humidity23%
Visibility—
Dew point52°
Mon, 17105° / 89°0
105 °
Sun City West, Monday, 17 August
Overcast. High 105°, low 89°.
Pressure29.94 inHg
Wind8.6 mph S
Humidity29%
Visibility—
Dew point59°
Tue, 18107° / 90°0
107 °
Sun City West, Tuesday, 18 August
Partly cloudy. High 107°, low 90°.
Pressure29.88 inHg
Wind8 mph E
Humidity28%
Visibility—
Dew point59°
Wed, 19113° / 92°0.01
113 °
Sun City West, Wednesday, 19 August
Light rain. High 113°, low 92°.
Pressure29.83 inHg
Wind11.2 mph W
Humidity24%
Visibility—
Dew point58°
Thu, 20108° / 88°0
108 °
Sun City West, Thursday, 20 August
Clear. High 108°, low 88°.
Pressure29.85 inHg
Wind14.7 mph SW
Humidity33%
Visibility—
Dew point62°
Fri, 21112° / 92°0.03
112 °
Sun City West, Friday, 21 August
Light rain. High 112°, low 92°.
Pressure29.77 inHg
Wind10.3 mph SW
Humidity22%
Visibility—
Dew point56°
Sat, 22110° / 94°0
110 °
Sun City West, Saturday, 22 August
Overcast. High 110°, low 94°.
Pressure29.83 inHg
Wind7.2 mph SW
Humidity22%
Visibility—
Dew point56°
Sun, 23113° / 95°0
113 °
Sun City West, Sunday, 23 August
Clear. High 113°, low 95°.
Pressure29.85 inHg
Wind12.7 mph E
Humidity20%
Visibility—
Dew point56°
Mon, 24110° / 93°0
110 °
Sun City West, Monday, 24 August
Light rain. High 110°, low 93°.
Pressure29.85 inHg
Wind14.7 mph NE
Humidity21%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 25100° / 79°0.03
100 °
Sun City West, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high100°
Average low79°
Average precipitation0.03 in
Chance of precipitation18%
Record high110° (2020)
Record low67° (1990)
Wed, 26100° / 79°0.03
100 °
Sun City West, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high100°
Average low79°
Average precipitation0.03 in
Chance of precipitation17%
Record high110° (2021)
Record low70° (1990)
Thu, 27100° / 79°0.06
100 °
Sun City West, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high100°
Average low79°
Average precipitation0.06 in
Chance of precipitation12%
Record high110° (2011)
Record low69° (1972)
Fri, 28101° / 79°0.02
101 °
Sun City West, Friday, 28 August
Climate normal for this date — 60-year average.
Average high101°
Average low79°
Average precipitation0.02 in
Chance of precipitation10%
Record high111° (2023)
Record low70° (2016)
Sat, 29101° / 79°0.02
101 °
Sun City West, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high101°
Average low79°
Average precipitation0.02 in
Chance of precipitation8%
Record high111° (2023)
Record low70° (1993)
Sun, 30101° / 79°0.02
101 °
Sun City West, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high101°
Average low79°
Average precipitation0.02 in
Chance of precipitation13%
Record high109° (2022)
Record low69° (2010)
Mon, 31100° / 79°0.02
100 °
Sun City West, Monday, 31 August
Climate normal for this date — 60-year average.
Average high100°
Average low79°
Average precipitation0.02 in
Chance of precipitation10%
Record high109° (2011)
Record low69° (1962)
Tue, 0199° / 79°0.03
99 °
Sun City West, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high99°
Average low79°
Average precipitation0.03 in
Chance of precipitation15%
Record high109° (1982)
Record low66° (1992)
Wed, 0299° / 78°0.06
99 °
Sun City West, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high99°
Average low78°
Average precipitation0.06 in
Chance of precipitation10%
Record high108° (1982)
Record low66° (1992)
Thu, 03100° / 78°0.02
100 °
Sun City West, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high100°
Average low78°
Average precipitation0.02 in
Chance of precipitation7%
Record high108° (2020)
Record low67° (1999)
Fri, 0499° / 77°0.05
99 °
Sun City West, Friday, 4 September
Climate normal for this date — 60-year average.
Average high99°
Average low77°
Average precipitation0.05 in
Chance of precipitation18%
Record high110° (2020)
Record low65° (1961)
Sat, 0599° / 77°0.09
99 °
Sun City West, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high99°
Average low77°
Average precipitation0.09 in
Chance of precipitation22%
Record high112° (2020)
Record low61° (1992)
Sun, 0698° / 77°0.02
98 °
Sun City West, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high98°
Average low77°
Average precipitation0.02 in
Chance of precipitation10%
Record high111° (2020)
Record low64° (1970)
Mon, 0799° / 77°0.02
99 °
Sun City West, Monday, 7 September
Climate normal for this date — 60-year average.
Average high99°
Average low77°
Average precipitation0.02 in
Chance of precipitation15%
Record high108° (2021)
Record low65° (1970)
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 Sun City West, AZ 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 Sun City West, AZ 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.