1. WeatherSpark.com
  2. United States
  3. California
  4. Mammoth Lakes

January Weather in Mammoth Lakes California, United States

Daily high temperatures are around 37°F, rarely falling below 25°F or exceeding 48°F.

Daily low temperatures increase by 2°F, from 11°F to 14°F, rarely falling below -0°F or exceeding 23°F.

For reference, on July 26, the hottest day of the year, temperatures in Mammoth Lakes typically range from 41°F to 76°F, while on December 29, the coldest day of the year, they range from 11°F to 36°F.

Average High and Low Temperature in January in Mammoth Lakes

Average High and Low Temperature in January in Mammoth LakesJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310°F0°F5°F5°F10°F10°F15°F15°F20°F20°F25°F25°F30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°FDecFebJan 136°FJan 136°F11°F11°FJan 3137°FJan 3137°F14°F14°FJan 1137°FJan 1137°F12°F12°FJan 2137°FJan 2137°F13°F13°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on January. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in January in Mammoth Lakes

Average Hourly Temperature in January in Mammoth LakesJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMDecFebNowNowfrigidfreezingfreezingvery cold
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Gračanica, Bosnia & Herzegovina (6,217 miles away); Chepelare, Bulgaria (6,500 miles); and Dêqên, China (7,395 miles) are the far-away foreign places with temperatures most similar to Mammoth Lakes (view comparison).

Map
Marker
© OpenStreetMap contributors

Compare Mammoth Lakes to another city:

Map

The month of January in Mammoth Lakes experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 45% throughout the month.

The clearest day of the month is January 26, with clear, mostly clear, or partly cloudy conditions 56% of the time.

For reference, on February 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 48%, while on August 7, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 88%.

Cloud Cover Categories in January in Mammoth Lakes

Cloud Cover Categories in January in Mammoth LakesJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFebJan 154%Jan 154%Jan 3155%Jan 3155%Jan 1154%Jan 1154%Jan 2155%Jan 2155%NowNowclearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Mammoth Lakes, the chance of a wet day over the course of January is essentially constant, remaining around 24% throughout.

For reference, the year's highest daily chance of a wet day is 30% on February 21, and its lowest chance is 3% on July 1.

Over the course of January in Mammoth Lakes, the chance of a day with only rain remains an essentially constant 1% throughout, the chance of a day with mixed snow and rain remains an essentially constant 9% throughout, and the chance of a day with only snow remains an essentially constant 15% throughout.

Probability of Precipitation in January in Mammoth Lakes

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during January in Mammoth Lakes is essentially constant, remaining about 0.5 inches throughout, and rarely exceeding 1.8 inches.

The lowest average 31-day accumulation is 0.5 inches on January 17.

Average Monthly Rainfall in January in Mammoth Lakes

Average Monthly Rainfall in January in Mammoth LakesJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 in0 in5 in5 in10 in10 in15 in15 in20 in20 in25 in25 in30 in30 inDecFebJan 160.5 inJan 160.5 inJan 10.6 inJan 10.6 inJan 310.5 inJan 310.5 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day snowfall during January in Mammoth Lakes is rapidly decreasing, starting the month at 30.3 inches, when it rarely exceeds 74.1 inches or falls below 1.3 inches, and ending the month at 27.1 inches, when it rarely exceeds 59.2 inches or falls below 3.2 inches.

The highest average 31-day accumulation is 30.5 inches on January 4.

Average Monthly Snowfall in January in Mammoth Lakes

Average Monthly Snowfall in January in Mammoth LakesJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 in0 in10 in10 in20 in20 in30 in30 in40 in40 in50 in50 in60 in60 in70 in70 in80 in80 inDecFebJan 330.5 inJan 330.5 inJan 3127.1 inJan 3127.1 inJan 1129.5 inJan 1129.5 inJan 2127.8 inJan 2127.8 inNowNow
The average snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.

Over the course of January in Mammoth Lakes, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 41 minutes, implying an average daily increase of 1 minute, 21 seconds, and weekly increase of 9 minutes, 28 seconds.

The shortest day of the month is January 1, with 9 hours, 37 minutes of daylight and the longest day is January 31, with 10 hours, 18 minutes of daylight.

Hours of Daylight and Twilight in January in Mammoth Lakes

Hours of Daylight and Twilight in January in Mammoth LakesJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrDecFebnightnightdaydayJan 19 hr, 37 minJan 19 hr, 37 minJan 3110 hr, 18 minJan 3110 hr, 18 minJan 169 hr, 52 minJan 169 hr, 52 minNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The latest sunrise of the month in Mammoth Lakes is 7:11 AM on January 6 and the earliest sunrise is 11 minutes earlier at 7:00 AM on January 31.

The earliest sunset is 4:47 PM on January 1 and the latest sunset is 30 minutes later at 5:18 PM on January 31.

Daylight saving time is observed in Mammoth Lakes during 2024, but it neither starts nor ends during January, so the entire month is in daylight saving time.

For reference, on June 20, the longest day of the year, the Sun rises at 5:34 AM and sets 14 hours, 46 minutes later, at 8:20 PM, while on December 21, the shortest day of the year, it rises at 7:07 AM and sets 9 hours, 34 minutes later, at 4:41 PM.

Sunrise & Sunset with Twilight in January in Mammoth Lakes

The solar day over the course of January. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in January in Mammoth Lakes

Solar Elevation and Azimuth in January in Mammoth LakesJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMDecFeb0010102020203000010102020303030NowNow
northeastsouthwest
Solar elevation and azimuth over the course of January 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for January 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in January in Mammoth Lakes

Moon Rise, Set & Phases in January in Mammoth LakesJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMDecFebDec 123:33 PMDec 123:33 PMDec 264:34 PMDec 264:34 PMJan 113:58 AMJan 113:58 AMJan 259:55 AMJan 259:55 AMFeb 93:00 PMFeb 93:00 PMFeb 244:31 AMFeb 244:31 AM6:59 AM6:59 AM4:15 PM4:15 PM4:19 PM4:19 PM8:07 AM8:07 AM7:46 AM7:46 AM5:15 PM5:15 PM4:09 PM4:09 PM7:28 AM7:28 AM7:03 AM7:03 AM5:22 PM5:22 PM5:07 PM5:07 PM6:56 AM6:56 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Jan 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
74%-10:49 AMW10:22 PME4:09 AMS251,593 mi
2
65%-11:10 AMW11:20 PME4:48 AMS251,301 mi
3
50%-11:31 AMW-5:27 AMS250,185 mi
4
46%12:18 AME11:53 AMW-6:06 AMS248,250 mi
5
36%1:18 AMESE12:17 PMWSW-6:48 AMS245,568 mi
6
26%2:21 AMESE12:45 PMWSW-7:33 AMS242,287 mi
7
18%3:27 AMESE1:19 PMWSW-8:23 AMS238,628 mi
8
10%4:36 AMESE2:02 PMSW-9:19 AMS234,877 mi
9
4%5:45 AMSE2:55 PMSW-10:20 AMS231,363 mi
10
1%6:50 AMSE4:01 PMSW-11:25 AMS228,418 mi
11
0%7:46 AMSE5:15 PMWSW-12:30 PMS226,322 mi
12
3%8:33 AMESE6:33 PMWSW-1:33 PMS225,244 mi
13
8%9:11 AMESE7:50 PMWSW-2:30 PMS225,216 mi
14
16%9:43 AMESE9:05 PMW-3:23 PMS226,140 mi
15
26%10:11 AME10:17 PMW-4:12 PMS227,828 mi
16
37%10:37 AME11:27 PMW-5:00 PMS230,052 mi
17
50%11:03 AMENE--5:47 PMS232,582 mi
18
60%-12:37 AMWNW11:31 AMENE6:35 PMS235,226 mi
19
71%-1:46 AMWNW12:02 PMENE7:25 PMS237,843 mi
20
80%-2:55 AMWNW12:38 PMENE8:17 PMS240,342 mi
21
88%-4:03 AMNW1:21 PMNE9:12 PMS242,680 mi
22
94%-5:06 AMNW2:12 PMNE10:07 PMS244,834 mi
23
98%-6:01 AMNW3:08 PMNE11:01 PMS246,792 mi
24
100%-6:49 AMNW4:09 PMENE11:52 PMS248,532 mi
25
100%-7:28 AMWNW5:12 PMENE--
26
100%-8:00 AMWNW6:14 PMENE12:40 AMS250,012 mi
27
98%-8:28 AMWNW7:15 PMENE1:25 AMS251,166 mi
28
94%-8:52 AMWNW8:13 PME2:06 AMS251,907 mi
29
88%-9:13 AMW9:11 PME2:46 AMS252,136 mi
30
81%-9:34 AMW10:08 PME3:24 AMS251,753 mi
31
73%-9:55 AMW11:06 PMESE4:03 AMS250,677 mi

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Mammoth Lakes is essentially constant during January, remaining around 0% throughout.

For reference, on July 5, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in January in Mammoth Lakes

Humidity Comfort Levels in January in Mammoth LakesJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%DecFebJan 10%Jan 10%Jan 310%Jan 310%Jan 110%Jan 110%Jan 210%Jan 210%NowNowdrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Mammoth Lakes is essentially constant during January, remaining within 0.1 miles per hour of 6.2 miles per hour throughout.

For reference, on April 9, the windiest day of the year, the daily average wind speed is 7.2 miles per hour, while on August 2, the calmest day of the year, the daily average wind speed is 5.2 miles per hour.

The lowest daily average wind speed during January is 6.1 miles per hour on January 21.

Average Wind Speed in January in Mammoth Lakes

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Mammoth Lakes throughout January is predominantly from the west, with a peak proportion of 34% on January 1.

Wind Direction in January in Mammoth Lakes

Wind Direction in January in Mammoth LakesJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%DecFebNowNowwestsoutheastnorth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Mammoth Lakes typically lasts for 2.1 months (63 days), from around June 24 to around August 26, rarely starting before June 3, or ending after September 18.

The month of January in Mammoth Lakes is reliably fully outside of the growing season.

Time Spent in Various Temperature Bands and the Growing Season in January in Mammoth Lakes

Time Spent in Various Temperature Bands and the Growing Season in January in Mammoth LakesJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFeb0%Jan 160%Jan 16NowNowfrigidfreezingvery coldcold
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Mammoth Lakes are essentially constant during January, remaining around 0°F throughout.

Growing Degree Days in January in Mammoth Lakes

The average growing degree days accumulated over the course of January, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Mammoth Lakes is gradually increasing during January, rising by 0.8 kWh, from 2.8 kWh to 3.6 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in January in Mammoth Lakes

Average Daily Incident Shortwave Solar Energy in January in Mammoth LakesJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 kWh0.0 kWh0.5 kWh0.5 kWh1.0 kWh1.0 kWh1.5 kWh1.5 kWh2.0 kWh2.0 kWh2.5 kWh2.5 kWh3.0 kWh3.0 kWh3.5 kWh3.5 kWh4.0 kWh4.0 kWh4.5 kWh4.5 kWh5.0 kWh5.0 kWh5.5 kWh5.5 kWh6.0 kWh6.0 kWhDecFebJan 12.8 kWhJan 12.8 kWhJan 313.6 kWhJan 313.6 kWhJan 113.0 kWhJan 113.0 kWhJan 213.3 kWhJan 213.3 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Mammoth Lakes are 37.649 deg latitude, -118.972 deg longitude, and 7,874 ft elevation.

The topography within 2 miles of Mammoth Lakes contains very significant variations in elevation, with a maximum elevation change of 1,749 feet and an average elevation above sea level of 8,099 feet. Within 10 miles contains very significant variations in elevation (6,614 feet). Within 50 miles also contains extreme variations in elevation (13,547 feet).

The area within 2 miles of Mammoth Lakes is covered by trees (61%) and shrubs (39%), within 10 miles by shrubs (50%) and trees (39%), and within 50 miles by shrubs (59%) and trees (28%).

This report illustrates the typical weather in Mammoth Lakes, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Mammoth Lakes.

For each station, the records are corrected for the elevation difference between that station and Mammoth Lakes according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Mammoth Lakes is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Mammoth Lakes and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Mammoth Lakes and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page.