Monthly outlook for Morristown, AZ: average high 99.1°, average low 82.2°. That is 0.8° below the climate normal for August. Precipitation is expected on 7 days (about 1.2 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 9 August (110.6°), the coolest 20 August (75.4°).
99.1°/82.2°
Average high / low
−0.8°
Below normal
7 / 2
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
100.3°
101°
-0.4°
18 August – 27 August
97°
99.9°
-1.6°
28 August – 6 September
at normal
99.8°
—
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 (15 mi).
Sun, 09111° / 87°0
111 °
Morristown, Sunday, 9 August
Clear. High 111°, low 87°.
Pressure29.85 inHg
Wind6.3 mph SW
Humidity24%
Visibility6.2 mi
Dew point57°
Mon, 10107° / 83°0.04
107 °
Morristown, Monday, 10 August
Light rain. High 107°, low 83°.
Pressure29.85 inHg
Wind11.5 mph SW
Humidity27%
Visibility6.2 mi
Dew point59°
Tue, 11100° / 82°0.06
100 °
Morristown, Tuesday, 11 August
Light rain. High 100°, low 82°.
Pressure29.91 inHg
Wind10.4 mph W
Humidity34%
Visibility6.2 mi
Dew point62°
Wed, 1292° / 82°0.11
92 °
Morristown, Wednesday, 12 August
Light rain. High 92°, low 82°.
Pressure29.85 inHg
Wind4.8 mph S
Humidity35%
Visibility6.2 mi
Dew point58°
Thu, 1393° / 77°0.28
93 °
Morristown, Thursday, 13 August
Rain. High 93°, low 77°.
Pressure29.85 inHg
Wind12.1 mph SE
Humidity48%
Visibility—
Dew point64°
Fri, 1494° / 83°0
94 °
Morristown, Friday, 14 August
Overcast. High 94°, low 83°.
Pressure29.91 inHg
Wind9 mph S
Humidity34%
Visibility—
Dew point57°
Sat, 1598° / 85°0
98 °
Morristown, Saturday, 15 August
Overcast. High 98°, low 85°.
Pressure29.94 inHg
Wind11.8 mph SW
Humidity22%
Visibility—
Dew point47°
Sun, 1698° / 83°0
98 °
Morristown, Sunday, 16 August
Clear. High 98°, low 83°.
Pressure30.03 inHg
Wind10.4 mph SW
Humidity25%
Visibility—
Dew point50°
Mon, 17101° / 86°0
101 °
Morristown, Monday, 17 August
Partly cloudy. High 101°, low 86°.
Pressure29.94 inHg
Wind9 mph SW
Humidity24%
Visibility—
Dew point52°
Tue, 18101° / 86°0.01
101 °
Morristown, Tuesday, 18 August
Light rain. High 101°, low 86°.
Pressure29.88 inHg
Wind12.7 mph SE
Humidity30%
Visibility—
Dew point57°
Wed, 1998° / 80°0.3
98 °
Morristown, Wednesday, 19 August
Rain. High 98°, low 80°.
Pressure29.88 inHg
Wind16.8 mph SW
Humidity32%
Visibility—
Dew point59°
Thu, 2096° / 75°0.28
96 °
Morristown, Thursday, 20 August
Light rain. High 96°, low 75°.
Pressure29.94 inHg
Wind24 mph E
Humidity39%
Visibility—
Dew point60°
Fri, 2196° / 80°0
96 °
Morristown, Friday, 21 August
Overcast. High 96°, low 80°.
Pressure29.91 inHg
Wind7.8 mph SW
Humidity36%
Visibility—
Dew point58°
Sat, 2294° / 77°0.02
94 °
Morristown, Saturday, 22 August
Light rain. High 94°, low 77°.
Pressure29.88 inHg
Wind23.9 mph NW
Humidity29%
Visibility—
Dew point56°
Sun, 2397° / 80°0
97 °
Morristown, Sunday, 23 August
Overcast. High 97°, low 80°.
Pressure29.91 inHg
Wind6.8 mph W
Humidity34%
Visibility—
Dew point56°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 24100° / 79°0.02
100 °
Morristown, Monday, 24 August
Climate normal for this date — 60-year average.
Average high100°
Average low79°
Average precipitation0.02 in
Chance of precipitation12%
Record high112° (2020)
Record low66° (1992)
Tue, 25100° / 79°0.03
100 °
Morristown, 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 °
Morristown, 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 °
Morristown, 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 °
Morristown, 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 °
Morristown, 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 °
Morristown, 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 °
Morristown, 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 °
Morristown, 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 °
Morristown, 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 °
Morristown, 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 °
Morristown, 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 °
Morristown, 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 °
Morristown, 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)
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 Morristown, 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 Morristown, 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.