Monthly outlook for Cottonwood Ranch, AZ: average high 107.7°, average low 91.3°. That is 3.2° above the climate normal for August. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 2 days and 0.8 inches. The warmest day looks like 9 August (120.6°), the coolest 13 August (81.8°).
107.7°/91.3°
Average high / low
+3.2°
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
105.3°
102.2°
+1.7°
19 August – 28 August
111.8°
101.7°
+5.6°
29 August – 7 September
at normal
101.2°
—
August records over 66 years
118°7 August 2025All-time high
63.1°21 August 1979All-time low
Climate normals and records are computed from the nearest reference point — Glendale (2 mi).
Mon, 10116° / 91°0.1
116 °
Cottonwood Ranch, Monday, 10 August
Light rain. High 116°, low 91°.
Pressure29.83 inHg
Wind10.4 mph W
Humidity23%
Visibility6.2 mi
Dew point58°
Tue, 11105° / 89°0
105 °
Cottonwood Ranch, Tuesday, 11 August
Clear. High 105°, low 89°.
Pressure29.85 inHg
Wind8.1 mph W
Humidity29%
Visibility6.2 mi
Dew point62°
Wed, 1298° / 86°0.27
98 °
Cottonwood Ranch, Wednesday, 12 August
Rain. High 98°, low 86°.
Pressure29.83 inHg
Wind4.7 mph W
Humidity32%
Visibility6.2 mi
Dew point60°
Thu, 1396° / 82°0.37
96 °
Cottonwood Ranch, Thursday, 13 August
Rain. High 96°, low 82°.
Pressure29.83 inHg
Wind12.8 mph SE
Humidity49%
Visibility—
Dew point66°
Fri, 1498° / 87°0.02
98 °
Cottonwood Ranch, Friday, 14 August
Light rain. High 98°, low 87°.
Pressure29.88 inHg
Wind8.3 mph SE
Humidity26%
Visibility—
Dew point53°
Sat, 15102° / 90°0
102 °
Cottonwood Ranch, Saturday, 15 August
Overcast. High 102°, low 90°.
Pressure29.91 inHg
Wind9.2 mph W
Humidity25%
Visibility—
Dew point54°
Sun, 16105° / 91°0
105 °
Cottonwood Ranch, Sunday, 16 August
Light rain. High 105°, low 91°.
Pressure29.97 inHg
Wind10.9 mph W
Humidity23%
Visibility—
Dew point53°
Mon, 17106° / 92°0
106 °
Cottonwood Ranch, Monday, 17 August
Overcast. High 106°, low 92°.
Pressure29.91 inHg
Wind13.1 mph NE
Humidity28%
Visibility—
Dew point59°
Tue, 18108° / 92°0.01
108 °
Cottonwood Ranch, Tuesday, 18 August
Light rain. High 108°, low 92°.
Pressure29.88 inHg
Wind9.3 mph E
Humidity27%
Visibility—
Dew point58°
Wed, 19114° / 93°0
114 °
Cottonwood Ranch, Wednesday, 19 August
Light rain. High 114°, low 93°.
Pressure29.83 inHg
Wind11.9 mph S
Humidity22%
Visibility—
Dew point57°
Thu, 20109° / 90°0
109 °
Cottonwood Ranch, Thursday, 20 August
Clear. High 109°, low 90°.
Pressure29.85 inHg
Wind17 mph SW
Humidity33%
Visibility—
Dew point62°
Fri, 21113° / 96°0.02
113 °
Cottonwood Ranch, Friday, 21 August
Light rain. High 113°, low 96°.
Pressure29.77 inHg
Wind12.5 mph NE
Humidity22%
Visibility—
Dew point56°
Sat, 22111° / 96°0
111 °
Cottonwood Ranch, Saturday, 22 August
Overcast. High 111°, low 96°.
Pressure29.83 inHg
Wind9 mph W
Humidity21%
Visibility—
Dew point55°
Sun, 23114° / 98°0
114 °
Cottonwood Ranch, Sunday, 23 August
Clear. High 114°, low 98°.
Pressure29.85 inHg
Wind11.5 mph E
Humidity20%
Visibility—
Dew point56°
Mon, 24111° / 97°0
111 °
Cottonwood Ranch, Monday, 24 August
Mostly clear. High 111°, low 97°.
Pressure29.85 inHg
Wind14.9 mph N
Humidity21%
Visibility—
Dew point56°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 25101° / 80°0.04
101 °
Cottonwood Ranch, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high101°
Average low80°
Average precipitation0.04 in
Chance of precipitation15%
Record high111° (2011)
Record low70° (1990)
Wed, 26102° / 80°0.03
102 °
Cottonwood Ranch, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high102°
Average low80°
Average precipitation0.03 in
Chance of precipitation15%
Record high112° (2001)
Record low69° (1960)
Thu, 27102° / 80°0.04
102 °
Cottonwood Ranch, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high102°
Average low80°
Average precipitation0.04 in
Chance of precipitation15%
Record high111° (2011)
Record low70° (1992)
Fri, 28103° / 80°0.02
103 °
Cottonwood Ranch, Friday, 28 August
Climate normal for this date — 60-year average.
Average high103°
Average low80°
Average precipitation0.02 in
Chance of precipitation7%
Record high114° (2023)
Record low70° (1992)
Sat, 29103° / 80°0.03
103 °
Cottonwood Ranch, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high103°
Average low80°
Average precipitation0.03 in
Chance of precipitation10%
Record high113° (2023)
Record low71° (1960)
Sun, 30102° / 80°0.03
102 °
Cottonwood Ranch, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high102°
Average low80°
Average precipitation0.03 in
Chance of precipitation15%
Record high111° (2011)
Record low70° (1992)
Mon, 31102° / 80°0.02
102 °
Cottonwood Ranch, Monday, 31 August
Climate normal for this date — 60-year average.
Average high102°
Average low80°
Average precipitation0.02 in
Chance of precipitation12%
Record high111° (2011)
Record low68° (1962)
Tue, 01101° / 80°0.02
101 °
Cottonwood Ranch, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high101°
Average low80°
Average precipitation0.02 in
Chance of precipitation12%
Record high110° (1982)
Record low65° (1992)
Wed, 02101° / 79°0.06
101 °
Cottonwood Ranch, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high101°
Average low79°
Average precipitation0.06 in
Chance of precipitation13%
Record high110° (1982)
Record low64° (1992)
Thu, 03102° / 79°0.01
102 °
Cottonwood Ranch, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high102°
Average low79°
Average precipitation0.01 in
Chance of precipitation5%
Record high109° (2022)
Record low66° (1992)
Fri, 04101° / 78°0.06
101 °
Cottonwood Ranch, Friday, 4 September
Climate normal for this date — 60-year average.
Average high101°
Average low78°
Average precipitation0.06 in
Chance of precipitation10%
Record high112° (2020)
Record low65° (1999)
Sat, 05100° / 78°0.08
100 °
Cottonwood Ranch, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high100°
Average low78°
Average precipitation0.08 in
Chance of precipitation18%
Record high114° (2020)
Record low62° (1992)
Sun, 06100° / 78°0.04
100 °
Cottonwood Ranch, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high100°
Average low78°
Average precipitation0.04 in
Chance of precipitation15%
Record high112° (2020)
Record low62° (1970)
Mon, 07100° / 78°0.02
100 °
Cottonwood Ranch, Monday, 7 September
Climate normal for this date — 60-year average.
Average high100°
Average low78°
Average precipitation0.02 in
Chance of precipitation13%
Record high110° (1979)
Record low66° (1985)
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 Cottonwood Ranch, 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 Cottonwood Ranch, 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.