Monthly outlook for North Mammoth, AZ: average high 100.7°, average low 80.2°. That is 4.8° above the climate normal for August. Precipitation is expected on 7 days (about 1.9 inches), against a normal of 7 days and 1.8 inches. The warmest day looks like 23 August (108.3°), the coolest 13 August (75.4°).
100.7°/80.2°
Average high / low
+4.8°
Above normal
7 / 7
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
97.5°
92.2°
+3°
19 August – 28 August
105.9°
91.9°
+7.8°
29 August – 7 September
at normal
91.4°
—
August records over 66 years
107.6°7 August 2025All-time high
59.2°17 August 1979All-time low
Climate normals and records are computed from the nearest reference point — San Manuel (9 mi).
Mon, 10108° / 76°0.76
108 °
North Mammoth, Monday, 10 August
Heavy rain. High 108°, low 76°.
Pressure29.88 inHg
Wind5.3 mph NW
Humidity27%
Visibility6.2 mi
Dew point56°
Tue, 1196° / 78°0.09
96 °
North Mammoth, Tuesday, 11 August
Rain. High 96°, low 78°.
Pressure29.94 inHg
Wind12.8 mph W
Humidity39%
Visibility6.2 mi
Dew point62°
Wed, 1290° / 77°0.18
90 °
North Mammoth, Wednesday, 12 August
Rain. High 90°, low 77°.
Pressure29.91 inHg
Wind6.1 mph NW
Humidity52%
Visibility6.2 mi
Dew point63°
Thu, 1381° / 75°0.36
81 °
North Mammoth, Thursday, 13 August
Rain. High 81°, low 75°.
Pressure29.94 inHg
Wind4.9 mph SE
Humidity79%
Visibility—
Dew point69°
Fri, 1495° / 76°0
95 °
North Mammoth, Friday, 14 August
Light rain. High 95°, low 76°.
Pressure29.94 inHg
Wind13.4 mph W
Humidity42%
Visibility—
Dew point61°
Sat, 1596° / 83°0.03
96 °
North Mammoth, Saturday, 15 August
Light rain. High 96°, low 83°.
Pressure30.03 inHg
Wind6 mph S
Humidity44%
Visibility—
Dew point61°
Sun, 1699° / 76°0.37
99 °
North Mammoth, Sunday, 16 August
Rain. High 99°, low 76°.
Pressure30.03 inHg
Wind12.8 mph W
Humidity34%
Visibility—
Dew point60°
Mon, 17100° / 80°0
100 °
North Mammoth, Monday, 17 August
Partly cloudy. High 100°, low 80°.
Pressure29.97 inHg
Wind10.2 mph N
Humidity33%
Visibility—
Dew point59°
Tue, 18102° / 81°0
102 °
North Mammoth, Tuesday, 18 August
Clear. High 102°, low 81°.
Pressure29.94 inHg
Wind12.1 mph NW
Humidity31%
Visibility—
Dew point58°
Wed, 19105° / 79°0.07
105 °
North Mammoth, Wednesday, 19 August
Light rain. High 105°, low 79°.
Pressure29.88 inHg
Wind37.7 mph NE
Humidity25%
Visibility—
Dew point56°
Thu, 20104° / 78°0
104 °
North Mammoth, Thursday, 20 August
Clear. High 104°, low 78°.
Pressure29.91 inHg
Wind10.8 mph NW
Humidity33%
Visibility—
Dew point58°
Fri, 21106° / 86°0
106 °
North Mammoth, Friday, 21 August
Partly cloudy. High 106°, low 86°.
Pressure29.83 inHg
Wind19.2 mph NW
Humidity25%
Visibility—
Dew point56°
Sat, 22105° / 83°0
105 °
North Mammoth, Saturday, 22 August
Partly cloudy. High 105°, low 83°.
Pressure29.88 inHg
Wind11.6 mph NW
Humidity25%
Visibility—
Dew point55°
Sun, 23108° / 87°0.01
108 °
North Mammoth, Sunday, 23 August
Light rain. High 108°, low 87°.
Pressure29.94 inHg
Wind9.3 mph NW
Humidity18%
Visibility—
Dew point50°
Mon, 24107° / 85°0.04
107 °
North Mammoth, Monday, 24 August
Light rain. High 107°, low 85°.
Pressure29.91 inHg
Wind13.2 mph NW
Humidity21%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2591° / 71°0.08
91 °
North Mammoth, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high91°
Average low71°
Average precipitation0.08 in
Chance of precipitation38%
Record high102° (2020)
Record low61° (1992)
Wed, 2692° / 71°0.1
92 °
North Mammoth, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high92°
Average low71°
Average precipitation0.1 in
Chance of precipitation42%
Record high102° (2020)
Record low60° (1966)
Thu, 2792° / 71°0.09
92 °
North Mammoth, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high92°
Average low71°
Average precipitation0.09 in
Chance of precipitation42%
Record high103° (2011)
Record low62° (1987)
Fri, 2893° / 72°0.08
93 °
North Mammoth, Friday, 28 August
Climate normal for this date — 60-year average.
Average high93°
Average low72°
Average precipitation0.08 in
Chance of precipitation37%
Record high103° (2023)
Record low62° (1987)
Sat, 2992° / 71°0.09
92 °
North Mammoth, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high92°
Average low71°
Average precipitation0.09 in
Chance of precipitation37%
Record high103° (2023)
Record low62° (1987)
Sun, 3092° / 71°0.06
92 °
North Mammoth, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high92°
Average low71°
Average precipitation0.06 in
Chance of precipitation37%
Record high103° (2011)
Record low61° (1992)
Mon, 3192° / 71°0.07
92 °
North Mammoth, Monday, 31 August
Climate normal for this date — 60-year average.
Average high92°
Average low71°
Average precipitation0.07 in
Chance of precipitation35%
Record high102° (2011)
Record low60° (2000)
Tue, 0191° / 71°0.07
91 °
North Mammoth, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high91°
Average low71°
Average precipitation0.07 in
Chance of precipitation38%
Record high100° (2011)
Record low62° (1993)
Wed, 0291° / 71°0.07
91 °
North Mammoth, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high91°
Average low71°
Average precipitation0.07 in
Chance of precipitation33%
Record high99° (1970)
Record low63° (1987)
Thu, 0391° / 70°0.08
91 °
North Mammoth, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high91°
Average low70°
Average precipitation0.08 in
Chance of precipitation40%
Record high99° (1983)
Record low63° (1967)
Fri, 0491° / 70°0.1
91 °
North Mammoth, Friday, 4 September
Climate normal for this date — 60-year average.
Average high91°
Average low70°
Average precipitation0.1 in
Chance of precipitation35%
Record high103° (2020)
Record low49° (1961)
Sat, 0591° / 69°0.09
91 °
North Mammoth, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high91°
Average low69°
Average precipitation0.09 in
Chance of precipitation37%
Record high102° (2020)
Record low58° (1984)
Sun, 0691° / 70°0.08
91 °
North Mammoth, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high91°
Average low70°
Average precipitation0.08 in
Chance of precipitation37%
Record high103° (2023)
Record low58° (1988)
Mon, 0791° / 69°0.09
91 °
North Mammoth, Monday, 7 September
Climate normal for this date — 60-year average.
Average high91°
Average low69°
Average precipitation0.09 in
Chance of precipitation37%
Record high101° (2023)
Record low61° (1966)
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 North Mammoth, 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 North Mammoth, 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.