Can they make snow?

A live wet-bulb check. Can snowmakers run where you are, and when?

How this works
We pull NOAA's hourly forecast for your location and calculate the wet-bulb temperature for each hour. Snowmakers rely on wet-bulb because it accounts for both cold and dry air, the two conditions that let water droplets freeze in flight. Below 28°F−2°C they can run; below 25°F−4°C the snow is good quality.

Can they make snow at Mammoth Mountain?

YES

Snowmaking possible at the summit of Mammoth Mountain, CA

Summit: 33°F1°C air · 51% humidity

Marginal: snowmakers can just barely run
Colder Snowmaking line 28°F−2°C Warmer

Snowmaking conditions now, until today 10 AM.

Next 48 hours wet-bulb by hour; columns below the line are snowmaking hours
28°F−2°C 20°F−6°C Now Mon Tue
  • Ideal
  • Great
  • Marginal
  • Too warm
  • Night
Hourly table
HourAirHumidityWet-bulbSnowmaking
Sun 9 AM33°F1°C51%26.7°F−3.0°CMarginal
Sun 10 AM37°F3°C44%29.4°F−1.5°CToo warm
Sun 11 AM41°F5°C42%32.5°F0.3°CToo warm
Sun 12 PM43°F6°C40%33.8°F1.0°CToo warm
Sun 1 PM43°F6°C40%33.8°F1.0°CToo warm
Sun 2 PM44°F7°C40%34.7°F1.5°CToo warm
Sun 3 PM43°F6°C43%34.2°F1.2°CToo warm
Sun 4 PM41°F5°C49%33.3°F0.7°CToo warm
Sun 5 PM39°F4°C60%33.0°F0.5°CToo warm
Sun 6 PM36°F2°C70%31.5°F−0.3°CToo warm
Sun 7 PM34°F1°C75%30.3°F−1.0°CToo warm
Sun 8 PM33°F1°C75%29.3°F−1.5°CToo warm
Sun 9 PM33°F1°C75%29.3°F−1.5°CToo warm
Sun 10 PM32°F0°C74%28.2°F−2.1°CMarginal
Sun 11 PM32°F0°C74%28.2°F−2.1°CMarginal
Mon 12 AM33°F1°C66%28.2°F−2.1°CMarginal
Mon 1 AM33°F1°C64%28.0°F−2.2°CMarginal
Mon 2 AM32°F0°C61%26.8°F−2.9°CMarginal
Mon 3 AM32°F0°C58%26.5°F−3.1°CMarginal
Mon 4 AM32°F0°C54%26.1°F−3.3°CMarginal
Mon 5 AM31°F−1°C51%24.9°F−3.9°CMarginal
Mon 6 AM31°F−1°C46%24.5°F−4.2°CGreat
Mon 7 AM31°F−1°C44%24.4°F−4.2°CGreat
Mon 8 AM30°F−1°C44%23.5°F−4.7°CGreat
Mon 9 AM32°F0°C40%24.9°F−3.9°CMarginal
Mon 10 AM35°F2°C35%26.9°F−2.8°CMarginal
Mon 11 AM37°F3°C35%28.5°F−1.9°CToo warm
Mon 12 PM38°F3°C36%29.4°F−1.5°CToo warm
Mon 1 PM39°F4°C35%30.1°F−1.1°CToo warm
Mon 2 PM39°F4°C38%30.4°F−0.9°CToo warm
Mon 3 PM40°F4°C40%31.4°F−0.3°CToo warm
Mon 4 PM38°F3°C43%30.1°F−1.1°CToo warm
Mon 5 PM36°F2°C49%29.0°F−1.6°CToo warm
Mon 6 PM35°F2°C52%28.5°F−2.0°CToo warm
Mon 7 PM33°F1°C53%26.8°F−2.9°CMarginal
Mon 8 PM31°F−1°C52%25.0°F−3.9°CMarginal
Mon 9 PM30°F−1°C53%24.2°F−4.3°CGreat
Mon 10 PM30°F−1°C53%24.2°F−4.3°CGreat
Mon 11 PM30°F−1°C52%24.1°F−4.4°CGreat
Tue 12 AM30°F−1°C47%23.8°F−4.6°CGreat
Tue 1 AM31°F−1°C41%24.2°F−4.4°CGreat
Tue 2 AM31°F−1°C36%23.8°F−4.5°CGreat
Tue 3 AM31°F−1°C33%23.7°F−4.6°CGreat
Tue 4 AM30°F−1°C31%22.8°F−5.1°CGreat
Tue 5 AM29°F−2°C29%22.0°F−5.6°CGreat
Tue 6 AM28°F−2°C28%21.2°F−6.0°CGreat
Tue 7 AM27°F−3°C26%20.4°F−6.4°CGreat
Tue 8 AM28°F−2°C25%21.1°F−6.0°CGreat

Right now at the base

Mostly clear
38°F3°C feels like 34°F1°C
Wind
5 mph7 km/h, gusts 15 mph24 km/h
Humidity
44%
Precipitation
0% chance

Snow forecast new snow at the base, NOAA forecast

Next 24 h
0″0 cm
Next 48 h
0″0 cm
Next 72 h
0″0 cm

No new snow in the forecast for the next 72 hours.

7-day outlook

  1. Today 52°F11°C 33°F1°C Sunny
  2. Mon 49°F9°C 30°F−1°C Sunny
  3. Tue 53°F12°C 33°F1°C Sunny
  4. Wed 50°F10°C 33°F1°C Mostly Sunny
  5. Thu 45°F7°C 29°F−2°C Partly Sunny then Chance Light Snow
  6. Fri 39°F4°C 26°F−3°C Chance Light Snow
  7. Sat 35°F2°C 23°F−5°C Chance Light Snow ❄︎ <1″<3 cm

Forecast for 9 AM · NOAA grid updated 4:30 AM

About this forecast

Mammoth Mountain is a ski resort in California with a base at 7,953 ft and a summit at 11,053 ft, 3,100 ft of vertical. This page checks NOAA's hourly forecast at the base and the summit every time you load it and works out the wet-bulb temperature, which is what decides whether snow guns can run. Snowmakers can start below 28°F−2°C wet-bulb, and make good snow below 25°F−4°C.

Other ski resorts in California

All ski resorts by state →

Base: NOAA's forecast for the base area (forecast grid elevation 8,809 ft). Summit: NOAA's forecast for the top of the mountain (forecast grid elevation 9,872 ft).

Click a pin or anywhere on the map to check it.