Monthly outlook for Mammoth, CA: average high 62.1°, average low 36.7°. That is 1.8° above the climate normal for October. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 3 days and 0.9 inches. The warmest day looks like 18 October (73.6°), the coolest 29 October (29.8°).
62.1°/36.7°
Average high / low
+1.8°
Above normal
4 / 3
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
67.4°
60.9°
+3.6°
27 October – 5 November
53.4°
54.8°
-0.8°
6 November – 15 November
at normal
49.2°
—
October records over 66 years
89.4°1 October 2010All-time high
16°29 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Perez (6 mi).
Sun, 1874° / 36°0
74 °
Mammoth, Sunday, 18 October
Clear. High 74°, low 36°.
Pressure29.97 inHg
Wind2.4 mph SE
Humidity25%
Visibility6.2 mi
Dew point26°
Mon, 1966° / 38°0
66 °
Mammoth, Monday, 19 October
Overcast. High 66°, low 38°.
Pressure29.85 inHg
Wind7 mph SE
Humidity28%
Visibility6.2 mi
Dew point22°
Tue, 2070° / 42°0
70 °
Mammoth, Tuesday, 20 October
Mostly clear. High 70°, low 42°.
Pressure29.85 inHg
Wind10.7 mph SE
Humidity26%
Visibility6.2 mi
Dew point28°
Wed, 2164° / 45°0.17
64 °
Mammoth, Wednesday, 21 October
Light rain. High 64°, low 45°.
Pressure29.94 inHg
Wind1.8 mph SE
Humidity54%
Visibility6.2 mi
Dew point41°
Thu, 2258° / 44°0.18
58 °
Mammoth, Thursday, 22 October
Light rain. High 58°, low 44°.
Pressure29.91 inHg
Wind15.1 mph W
Humidity84%
Visibility—
Dew point45°
Fri, 2359° / 37°0
59 °
Mammoth, Friday, 23 October
Clear. High 59°, low 37°.
Pressure30.21 inHg
Wind11.3 mph NW
Humidity56%
Visibility—
Dew point31°
Sat, 2468° / 33°0
68 °
Mammoth, Saturday, 24 October
Clear. High 68°, low 33°.
Pressure30.24 inHg
Wind10.9 mph SE
Humidity21%
Visibility—
Dew point15°
Sun, 2572° / 37°0
72 °
Mammoth, Sunday, 25 October
Overcast. High 72°, low 37°.
Pressure30.09 inHg
Wind12.5 mph SE
Humidity22%
Visibility—
Dew point19°
Mon, 2670° / 35°0
70 °
Mammoth, Monday, 26 October
Mostly clear. High 70°, low 35°.
Pressure29.88 inHg
Wind7.4 mph SE
Humidity17%
Visibility—
Dew point11°
Tue, 2764° / 37°0
64 °
Mammoth, Tuesday, 27 October
Overcast. High 64°, low 37°.
Pressure29.83 inHg
Wind11.5 mph NW
Humidity22%
Visibility—
Dew point15°
Wed, 2858° / 33°0
58 °
Mammoth, Wednesday, 28 October
Mostly clear. High 58°, low 33°.
Pressure30.03 inHg
Wind13.6 mph NW
Humidity39%
Visibility—
Dew point24°
Thu, 2961° / 30°0
61 °
Mammoth, Thursday, 29 October
Clear. High 61°, low 30°.
Pressure30.09 inHg
Wind20.4 mph SW
Humidity44%
Visibility—
Dew point26°
Fri, 3046° / 35°0.25
46 °
Mammoth, Friday, 30 October
Snow. High 46°, low 35°.
Pressure29.85 inHg
Wind22.9 mph SW
Humidity96%
Visibility—
Dew point37°
Sat, 3144° / 36°0.04
44 °
Mammoth, Saturday, 31 October
Light rain. High 44°, low 36°.
Pressure29.88 inHg
Wind24 mph SW
Humidity87%
Visibility—
Dew point35°
Sun, 0147° / 37°0.24
47 °
Mammoth, Sunday, 1 November
Light rain. High 47°, low 37°.
Pressure29.85 inHg
Wind32.2 mph SW
Humidity88%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0254° / 35°0.06
54 °
Mammoth, Monday, 2 November
Climate normal for this date — 60-year average.
Average high54°
Average low35°
Average precipitation0.06 in
Chance of precipitation25%
Record high75° (2020)
Record low22° (2002)
Tue, 0355° / 35°0.06
55 °
Mammoth, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high55°
Average low35°
Average precipitation0.06 in
Chance of precipitation25%
Record high71° (2020)
Record low23° (1994)
Wed, 0454° / 35°0.06
54 °
Mammoth, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high54°
Average low35°
Average precipitation0.06 in
Chance of precipitation22%
Record high71° (1980)
Record low26° (2013)
Thu, 0553° / 35°0.07
53 °
Mammoth, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low35°
Average precipitation0.07 in
Chance of precipitation27%
Record high71° (2020)
Record low24° (2017)
Fri, 0652° / 35°0.1
52 °
Mammoth, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low35°
Average precipitation0.1 in
Chance of precipitation30%
Record high70° (1976)
Record low21° (1971)
Sat, 0751° / 34°0.1
51 °
Mammoth, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.1 in
Chance of precipitation28%
Record high68° (2019)
Record low20° (2017)
Sun, 0850° / 33°0.07
50 °
Mammoth, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.07 in
Chance of precipitation30%
Record high69° (2019)
Record low11° (1994)
Mon, 0949° / 33°0.1
49 °
Mammoth, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.1 in
Chance of precipitation40%
Record high65° (2025)
Record low19° (1998)
Tue, 1049° / 33°0.07
49 °
Mammoth, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.07 in
Chance of precipitation27%
Record high67° (2016)
Record low18° (1985)
Wed, 1149° / 33°0.08
49 °
Mammoth, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.08 in
Chance of precipitation30%
Record high67° (2013)
Record low14° (1985)
Thu, 1249° / 33°0.06
49 °
Mammoth, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high63° (1990)
Record low11° (1985)
Fri, 1348° / 33°0.09
48 °
Mammoth, Friday, 13 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.09 in
Chance of precipitation30%
Record high67° (1995)
Record low5° (1985)
Sat, 1448° / 31°0.06
48 °
Mammoth, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.06 in
Chance of precipitation27%
Record high69° (1995)
Record low9° (1985)
Sun, 1547° / 32°0.06
47 °
Mammoth, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.06 in
Chance of precipitation27%
Record high63° (2008)
Record low7° (1964)
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 Mammoth, 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 Mammoth, 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.