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.
NO

45°F7°C wet-bulb in Keystone, CO

52°F11°C air · 63% humidity

Too warm for snowmaking
Colder Snowmaking line 28°F−2°C Warmer

Next snowmaking window: Sat 2 AM – 4 AM.

Next 48 hours wet-bulb by hour; columns below the line are snowmaking hours
28°F−2°C 28°F−2°C Now Fri Sat

Use the left and right arrow keys to step through hours.

  • Ideal
  • Great
  • Marginal
  • Too warm
  • Night
Hourly table
HourAirHumidityWet-bulbSnowmaking
Thu 6 PM52°F11°C63%45.2°F7.3°CToo warm
Thu 7 PM48°F9°C74%43.3°F6.3°CToo warm
Thu 8 PM47°F8°C76%42.7°F6.0°CToo warm
Thu 9 PM47°F8°C76%42.7°F6.0°CToo warm
Thu 10 PM45°F7°C79%41.3°F5.2°CToo warm
Thu 11 PM45°F7°C79%41.3°F5.2°CToo warm
Fri 12 AM45°F7°C79%41.3°F5.2°CToo warm
Fri 1 AM44°F7°C79%40.4°F4.6°CToo warm
Fri 2 AM43°F6°C79%39.4°F4.1°CToo warm
Fri 3 AM43°F6°C79%39.4°F4.1°CToo warm
Fri 4 AM42°F6°C79%38.4°F3.6°CToo warm
Fri 5 AM40°F4°C85%37.4°F3.0°CToo warm
Fri 6 AM40°F4°C85%37.4°F3.0°CToo warm
Fri 7 AM39°F4°C89%37.1°F2.8°CToo warm
Fri 8 AM38°F3°C92%36.5°F2.5°CToo warm
Fri 9 AM41°F5°C86%38.6°F3.6°CToo warm
Fri 10 AM46°F8°C65%40.0°F4.5°CToo warm
Fri 11 AM50°F10°C52%41.5°F5.3°CToo warm
Fri 12 PM53°F12°C43%42.5°F5.8°CToo warm
Fri 1 PM55°F13°C35%42.6°F5.9°CToo warm
Fri 2 PM55°F13°C32%42.1°F5.6°CToo warm
Fri 3 PM56°F13°C29%42.2°F5.7°CToo warm
Fri 4 PM56°F13°C29%42.2°F5.7°CToo warm
Fri 5 PM53°F12°C33%40.7°F4.8°CToo warm
Fri 6 PM50°F10°C39%39.4°F4.1°CToo warm
Fri 7 PM48°F9°C42%38.2°F3.5°CToo warm
Fri 8 PM42°F6°C55%35.0°F1.6°CToo warm
Fri 9 PM39°F4°C62%33.2°F0.7°CToo warm
Fri 10 PM37°F3°C67%32.0°F0.0°CToo warm
Fri 11 PM35°F2°C72%30.8°F−0.7°CToo warm
Sat 12 AM35°F2°C72%30.8°F−0.7°CToo warm
Sat 1 AM34°F1°C72%29.9°F−1.2°CToo warm
Sat 2 AM31°F−1°C81%28.2°F−2.1°CMarginal
Sat 3 AM31°F−1°C81%28.2°F−2.1°CMarginal
Sat 4 AM31°F−1°C85%28.7°F−1.8°CToo warm
Sat 5 AM31°F−1°C85%28.7°F−1.8°CToo warm
Sat 6 AM32°F0°C82%29.2°F−1.5°CToo warm
Sat 7 AM31°F−1°C88%29.1°F−1.6°CToo warm
Sat 8 AM32°F0°C92%30.6°F−0.8°CToo warm
Sat 9 AM35°F2°C85%32.6°F0.3°CToo warm
Sat 10 AM38°F3°C79%34.6°F1.4°CToo warm
Sat 11 AM41°F5°C70%36.2°F2.3°CToo warm
Sat 12 PM44°F7°C62%37.7°F3.2°CToo warm
Sat 1 PM45°F7°C60%38.3°F3.5°CToo warm
Sat 2 PM46°F8°C56%38.6°F3.7°CToo warm
Sat 3 PM45°F7°C55%37.6°F3.1°CToo warm
Sat 4 PM44°F7°C55%36.7°F2.6°CToo warm
Sat 5 PM42°F6°C57%35.2°F1.8°CToo warm

Right now

Light rain showers likely
52°F11°C
Wind
6 mph9 km/h
Humidity
63%
Precipitation
57% chance

Snow forecast new snow, 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. Tonight 38°F3°C Rain Showers Likely
  2. Fri 56°F13°C 31°F−1°C Slight Chance Rain Showers then Mostly Sunny
  3. Sat 47°F8°C 32°F0°C Chance Snow Showers
  4. Sun 48°F9°C 29°F−2°C Chance Snow Showers
  5. Mon 50°F10°C 27°F−3°C Chance Snow Showers
  6. Tue 53°F12°C 26°F−3°C Mostly Sunny
  7. Wed 52°F11°C 26°F−3°C Mostly Sunny
  8. Thu 54°F12°C Mostly Sunny

Forecast for 6 PM · NOAA grid updated 12:46 PM · grid elevation 9,396 ft

Checked at the base area (9,280 ft); the summit (12,408 ft) is usually colder.

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