Average Precipitation for Wyoming in January

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The tables below give monthly averages for rainfall plus snowfall during January at cities, towns and parks in Wyoming.

Each place has a total for the amount of precipitation it usually receives this month. Most sites also have information on the number of days with wet weather. That includes the days when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

The precipitation totals are averages based on weather data collected from 1981 to 2010 for the NOAA National Climatic Data Center.

You can jump to a separate table for each region of the state: Northwest, Southwest, North - Central, Northeast and Southeast Wyoming.

Northwest Wyoming

Average monthly precipitation in January
Days Place Inches Millimetres
  9 Alta 2.5 63
  3 Cody 0.3   8
10 Jackson 1.2 31
15 Moose 2.6 66
14 Moran 2.9 73
17 Yellowstone Lake 1.7 42
10 Yellowstone Park, Mammoth 0.7 19
15 Yellowstone Park, Old Faithful 2.1 54

Southwest Wyoming

January averages for total rainfall plus snowfall
Days Place Inches Millimetres
  5 Evanston 0.7 17
  3 Fontenelle Reservoir Dam 0.3   7
  – Fossil Butte Monument 0.5 12
  7 Kemmerer 0.7 17
  6 Rock Springs 0.5 11

North - Central Wyoming

Average amount of rain and snow in January
Days Place Inches Millimetres
  3 Boysen Reservoir Dam 0.2   5
  – Burgess Junction 1.1 29
  4 Lander 0.4 10
  3 Riverton 0.3   7
  – South Pass City 0.9 23
  5 Ten Sleep 0.6 16
  3 Thermopolis 0.4   9
  4 Worland 0.2   6

Northeast Wyoming

Precipitation totals for January
Days Place Inches Millimetres
  4 Buffalo 0.4 11
  7 Devils Tower 0.6 15
  7 Gillette 0.5 12
  7 Sheridan 0.6 14
  8 Sundance 0.7 17

Southeast Wyoming

Total precipitation during January
Days Place Inches Millimetres
  6 Casper 0.5 13
  7 Centennial 0.9 24
  5 Cheyenne 0.3   8
  6 Douglas 0.6 16
  5 Laramie 0.3   7
  3 Muddy Gap 0.3   7
  6 Rawlins 0.4   9
  3 Torrington 0.3   6
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

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