Don Day Wyoming Weather Forecast: Monday, March 20, 2023

It’s Monday, March 20 – and much below normal temperatures will continue through at least this next week, and continue to feel like January…despite today marking the first day of astronomical spring. An active weather pattern will bring a series of winter storm systems across the region through the end of the week. 

Central:

Mostly cloudy today in Lander, with a high near 34. There’s a slight chance of rain this afternoon in Casper, otherwise mostly cloudy and breezy, with a high near 50 and wind gusts as high as 22 mph. There’s a 20 percent chance of showers this afternoon in Glenrock, otherwise mostly cloudy, with a high near 48. 

There’s a 20 percent chance of snow overnight in Lander, with a low around 22. Casper has a 30 percent chance of snow overnight, with a low around 32; breezy, with gusts as high as 20 mph. Glenrock has a slight chance of rain and snow showers overnight, with a low around 32.

Southwest:

Snow showers expected in Evanston this afternoon, with a high near 34; new snow accumulation of less than a half inch possible. Scattered snow showers in Green River in the afternoon, with a high near 38. Snow showers are likely this afternoon in Lyman, with a high near 37 and wind chill values as low as 7; new snow accumulation of less than a half inch possible.

Snow showers are likely tonight in Evanston (less than half an inch possible), with a low around 16 and wind chill values as low as 4; breezy, with winds gusting as high as 30 mph. There’s a 30 percent chance of snow tonight in Green River, with a low around 18. Lyman has a 50 percent chance of snow showers tonight (less than half an inch possible), with a low around 16 and wind chill values as low as 1; breezy, with wind speeds increasing to 16 to 21 mph.

Western Wyoming:

Snow showers are likely in Pinedale today, with a high near 30; new snow accumulation of around an inch possible. Snow showers are likely this morning in Big Piney (less than half an inch expected), otherwise mostly cloudy, with a high near 31. 1 to 2 inches of snow is possible in Star Valley today, with a high near 37. 

There’s a 20 percent chance of snow overnight in Pinedale, with a low around 14. Big Piney has a slight chance of snow overnight, with a low around 8. Star Valley can expect 1 to 2 inches of new snow overnight, with a low around 22. 

Northwest:

Jackson can expect 1 to 3 inches of snow today, with a high near 39. Rain and snow showers are likely in Yellowstone National Park today, with a high near 41; new snow accumulation of less than a half inch possible. Dubois can expect scattered snow showers today (less than half an inch possible), with a high near 43; breezy, with gusts as high as 21 mph. 

Snow is likely overnight in Jackson, with a low around 22; new snow accumulation of around an inch possible. Snow is likely in Yellowstone overnight (less than one inch of new snow possible), with a low around 26. There’s a 40 percent chance of snow overnight in Dubois (less than half an inch accumulation), with a low around 23; breezy, with gusts as high as 21 mph. 

Bighorn Basin:

There’s a slight chance of rain and snow showers this afternoon in Cody, otherwise mostly cloudy, with a high near 44. Mostly cloudy in Greybull today, with a high near 52. Mostly cloudy today in Thermopolis, with a high near 47. 

Cody has a chance of rain and snow overnight, with a low around 26. There’s a slight chance of rain and snow in Greybull tonight, with a low around 28. Thermopolis has a chance of rain and snow overnight, with a low around 29.

North Central:

Partly sunny and breezy today in Buffalo, with a high near 44 and gusts as high as 20 mph. Partly sunny today in Sheridan, with a high near 41. Partly sunny in Clearmont today, with a high near 47. 

There’s a slight chance of rain and a chance of snow tonight in Buffalo, with a low around 27. There’s a 30 percent chance of snow overnight in Sheridan, with a low around 21 and new snow accumulation of less than a half inch possible. Clearmont has a chance of rain and snow overnight, with a low around 23.

Northeast:

There’s a slight chance of rain and snow today in Gillette, otherwise partly sunny, with a high near 44 and wind chill values as low as 15; breezy, with wind gusts as high as 26 mph. Sundance has a slight chance of rain and snow today, otherwise partly sunny, with a high near 44 and wind chill values as low as 15; breezy, with winds gusting as high as 26 mph. There’s a slight chance of rain and snow this afternoon in Upton, with a high near 44 and wind chill values as low as 11; breezy, with gusts as high as 25 mph. 

There’s a slight chance of rain and snow overnight in Gillette, with a low around 26 and wind chill values as low as 19; breezy, with wind gusts as high as 31 mph. Sundance has a slight chance of rain and snow, with a low around 26 and wind chill values as low as 19; breezy, with winds gusting as high as 31 mph. Upton has a chance of rain and snow overnight, with a low around 25 and wind chill values as low as 17; breezy, with gusts as high as 30 mph. 

Eastern Plains:

Partly sunny today in Torrington, with a high near 53. There’s a slight chance of snow and rain showers this afternoon in Lusk, otherwise partly sunny, with a high near 46. Wright has a slight chance of rain and snow today, with a high near 44 and wind chill values as low as 15; breezy, with winds gusting as high as 22 mph. 

There’s a slight chance of rain and snow showers overnight in Torrington, with a low around 29. Lusk has a chance of rain and snow showers tonight, with a low around 27. There’s a 20 percent chance of snow tonight in Wright, with a low around 26; breezy, with winds gusting as high as 22 mph.

Southeast:

There’s a slight chance of snow and rain showers this afternoon in Cheyenne, otherwise partly sunny, with a high near 47. There’s a 50 percent chance of snow showers today in Laramie, with a high near 42. There’s a 50 percent chance of snow showers this afternoon in Medicine Bow, with a high near 40. 

Cheyenne has a chance of rain and snow showers overnight, with a low around 28. Laramie has a 50 percent chance of snow showers overnight, with a low around 23. There’s a 30 percent chance of snow showers overnight in Medicine Bow, with a low around 24. 

South Central:

There’s a 30 percent chance of snow showers in Rawlins this afternoon, with a high near 35; breezy, with winds gusting as high as 30 mph. Snow showers are likely this afternoon in Encampment, with a high near 39; new snow accumulation of less than a half inch possible. There’s a chance of rain and snow showers in Baggs today, with a high near 40. 

There’s a 40 percent chance of snow showers overnight in Rawlins, with a low around 22; breezy, with gusts as high as 25 mph. Encampment can expect 1 to 2 inches of snow tonight, with a low around 18. Baggs has a chance of rain and snow showers tonight, with a low around 17.