Mammoth Lakes, CA weather in October
October in Mammoth Lakes: cool and mostly dry. Highs 61°F, lows 30°F, about 4 days with rain or snow and about 1.4 in of snow. A good month for most outdoor plans.
- Normal high
- 61°F
- Normal low
- 30°F
- Wet days
- 4
- 1.4 in total
- Snowfall
- 1.4 in
- snow on the ground 1 day
How October changes from start to finish
| October 1 | October 31 | |
|---|---|---|
| Normal high | 66°F | 56°F |
| Normal low | 34°F | 27°F |
| Sunrise / sunset | 6:51 am / 6:39 pm | 7:20 am / 5:58 pm |
| Daylight | 11.8 h | 10.7 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
What kind of days to expect
- Comfortable dayshigh 65-80°F (temperature only: no humidity station nearby)12 of 31
- Hot dayshigh 90°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow4 of 31
- Notable rainat least 0.10 in3 of 31
- Freezing nightslow 32°F or below21 of 31
- Snow on the groundsnow depth 1 in or more1 of 31
Average days per October, counted from daily records for each year 1991-2020.
Rain and snow in October
Normal precipitation is 1.4 in. About 1 day brings half an inch or more. Normal snowfall is 1.4 in.
How October varies from year to year
- Warmest October, 1991-20202003: average high 68°F
- Coolest October2004: average high 54°F
- Wettest October2016: 7.9 in
- Driest October2003: no measurable precipitation
- Highest reading80°F (October 9, 1996)
- Lowest reading2°F (October 4, 2019)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
October compared with September and November
| September | October | November | |
|---|---|---|---|
| Normal high | 71°F | 61°F | 49°F |
| Normal low | 40°F | 30°F | 23°F |
| Wet days | 2 | 4 | 5 |
| Comfortable days | 24 | 12 | 2 |
| Daylight | 12.4 h | 11.2 h | 10.2 h |
Highs change by -10°F from September and -12°F into November.
Nearby alternatives in October
- Warmer: Yosemite Valley, CA34 mi · high 71°F · 3 wet days
How Mammoth Lakes ranks in October
- Normal high309th warmest of 378 cities; 60th of 60 in California
- Wet days73rd driest of 378
What to pack for Mammoth Lakes in October
- A warm jacket – lows near 30°F, highs near 61°F
- Layers – afternoons near 61°F but nights near 30°F
- A hat and gloves – about 21 freezing nights
Heating and cooling
October has 606 heating degree days and 0 cooling degree days (base 65°F), 8% of the year's total heating and cooling demand.
Questions
How cold is Mammoth Lakes in October?
The normal high is 61°F and the normal low is 30°F. From 1991 to 2020 the coldest October reading was 2°F (October 4, 2019).
Does it rain a lot in Mammoth Lakes in October?
About 4 days in October have at least 0.01 in of precipitation, and the normal total is 1.4 in. The wettest October in 1991-2020 was in 2016 (7.9 in); the driest was in 2003, with no measurable precipitation.
Does it snow in Mammoth Lakes in October?
Yes. Normal snowfall in October is 1.4 in, and snow covers the ground on about 1 day.
Is October a good time to visit Mammoth Lakes?
October ranks 6th of 12 months on our comfort score for Mammoth Lakes (62 out of 100). It has about 12 comfortable days (judged by temperature only). The best months are June, August and September.
Where the numbers come from
- Temperature, rain and frost dates: Mammoth Lakes RS (USC00045280), 0.6 mi E of the city center, 7,804 ft (69 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Lee Vining (USC00044881), 23 mi NNW of the city center, 6,797 ft (1,076 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Not available for this location: humidity and wind by hour, cloud cover and daily humidity and wind (no station close enough or similar enough in elevation).