A wet Memorial Day weekend is in store for the East, with widespread rainfall of 1 to more than 2 inches expected from the Gulf Coast to southern New England. Well above normal temperatures are forecast to build across the northern Plains. Another round of heavy to excessive rainfall is expected to impact the western Gulf Coast this weekend with Flood Watches in effect. Read More >
Summary | Forecast & Snow, Wind Reports | Travel Center | Monitoring & Reporting | Safety
SYNOPSIS: A winter storm will spread moderate to heavy amounts of snow, along with windy conditions, into Western Wyoming tonight through early Monday morning. The heaviest snowfall is expected to occur Sunday night as the main system and associated cold front move across the area. Light snowfall is expected to spread east of the Divide late Sunday night and into the day Monday, as the strong cold front plows southeast across Wyoming. Much colder air is expected in the wake of this cold front Sunday night and Monday. High temperatures on Tuesday will be about 20 degrees below average, with highs generally in the teens.
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High Wind Statement |
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Winter Storm Warnings/Advisories thru 12pm Monday |
Forecast Additional Snowfall from Click Image To Enlarge |
Preliminary Snowfall and Wind Reports |
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323
NOUS45 KRIW 221339
PNSRIW
WYZ001>020-022>030-230132-
Public Information Statement
National Weather Service Riverton WY
732 AM MDT Fri May 22 2026
...PRECIPITATION REPORTS...
A strong spring low pressure system made it through Wyoming May
21st, bringing widespread, and much needed, rain and snow. Snow
levels were around 6000 feet, bringing snow to some lower elevations
like in Natrona County. Listed below are rain/liquid equivalent
totals of 0.1 inches and greater.
Location Amount Elevation (ft.)
...Wyoming...
...Big Horn County...
Byron 2.9 WSW (COCO) 0.61 in 4040
Byron (CWOP) 0.43 in 4022
Lovell (CWOP) 0.34 in 3964
Willow Creek 0.31 in 4310
Hyatt High 0.21 in 5670
Greybull 12.9 ENE (COCO) 0.16 in 4169
Greybull Airport (ASOS) 0.12 in 3934
...Fremont County...
Lander 7 WNW (COCO) 0.57 in 6042
Lander 5.9 SSE (COCO) 0.53 in 5556
Riverton 2 W (COCO) 0.46 in 5073
Lander Airport (ASOS) 0.42 in 5587
Riverton CWC (AWS) 0.42 in 5372
Lander 2 NNW (COCO) 0.40 in 5352
Rasberry 0.40 in 8833
Fort Washakie 3.7 SE (COCO) 0.35 in 5548
Lander 9.3 S (COCO) 0.34 in 5995
Lander 2 (CWOP) 0.33 in 5278
Riverton 1 (AWS) 0.33 in 4989
Riverton 1 (CWOP) 0.32 in 4920
Lander 1 (CWOP) 0.32 in 5797
Sharpnose 0.29 in 5555
Riverton Airport (ASOS) 0.29 in 5443
Wind River 0.27 in 9235
RED CANYON RANCH NC LANDER 1 0.22 in 5777
Anderson Ridge 0.20 in 8120
Kinnear 1 (CWOP) 0.20 in 5488
Camp Creek 0.18 in 7380
Jeffrey City (CWOP) 0.18 in 6442
Riverton 2 (CWOP) 0.16 in 4966
Crowheart (CWOP) 0.16 in 6137
Riverton 3 (CWOP) 0.15 in 5390
Elkhorn 0.11 in 8085
Pavillion 5.8 E (COCO) 0.10 in 5322
Riverton 2 (AWS) 0.10 in 4990
...Hot Springs County...
Grass Creek 0.28 in 7127
Lucerne (COOP) 0.23 in 4282
Anchor Dam (HADS) 0.13 in 6250
Kirby (CWOP) 0.11 in 4350
Thermopolis 33.2 W (COCO) 0.10 in 6612
...Johnson County...
Kaycee 14.6 W (COCO) 0.64 in 5247
Kaycee 10.9 WNW (COCO) 0.39 in 5481
Poker Creek 0.25 in 6439
Buffalo 2 (CWOP) 0.17 in 4370
Buffalo 15 W (HADS) 0.17 in 8398
Buffalo 1 (CWOP) 0.14 in 4675
School House 0.13 in 8604
Kaycee 5.2 NNW (COCO) 0.13 in 4917
Buffalo Airport (ASOS) 0.12 in 4925
Story 4 SE (HADS) 0.10 in 4662
...Lincoln County...
Smoot 5 SSE (COCO) 0.52 in 7005
Afton 2 (CWOP) 0.26 in 6267
Afton 1 (CWOP) 0.21 in 6257
Snake River (DOTAV) 0.16 in 5698
Alpine 5.9 S (COCO) 0.15 in 5932
Geneva 11 E (HADS) 0.14 in 6649
Etna 1 (CWOP) 0.13 in 5692
Star V Ranch 1 S (COCO) 0.12 in 6204
...Natrona County...
Powder River 0.1 NNE (COCO) 0.67 in 5714
Casper 1.5 SW (COCO) 0.66 in 5406
Casper 7.5 W (COCO) 0.63 in 5361
Casper 1.5 SW (COCO) 0.58 in 5350
Casper 0.7 WSW (COCO) 0.54 in 5224
Casper 2 ENE (COCO) 0.52 in 5252
Casper Airport (ASOS) 0.51 in 5348
Casper 7.1 SW (COCO) 0.50 in 5415
Evansville 5.4 ESE (COCO) 0.42 in 5174
Casper 17.2 SW (COCO) 0.26 in 5364
Mills 12.8 SSE (COCO) 0.26 in 7940
Fales Rock 0.25 in 6379
Casper (CWOP) 0.24 in 5341
Bar Nunn (CWOP) 0.11 in 5275
...Park County...
Wrbb Port No. 1 0.50 in 4750
Crandall 0.45 in 6640
Powell 3.9 ENE (COCO) 0.44 in 4288
Rattlesnake Mtn 0.43 in 8401
Grebe 0.43 in 7899
Eagle 0.40 in 7500
Cabin Creek 0.30 in 8650
Meeteetse 2 SE (COCO) 0.25 in 6071
Meeteetse (CWOP) 0.25 in 5749
Powell 2 (CWOP) 0.25 in 4381
Dry Creek 0.21 in 5520
Cody 7.3 SW (COCO) 0.20 in 5419
Cody 2 WSW (COCO) 0.11 in 5161
Cody Airport (AWOS) 0.11 in 5089
Pahaska (HADS) 0.10 in 6798
Wapiti (CWOP) 0.10 in 5993
...Sublette County...
Boulder (CWOP) 0.48 in 7338
Boulder (HADS) 0.45 in 7350
Daniel (HADS) 0.27 in 7470
Half Moon 0.26 in 8529
Pinedale 14 NW (COCO) 0.17 in 7464
Pinedale 6.3 SE (COCO) 0.16 in 7314
Hoback 0.12 in 6726
...Sweetwater County...
Rock Springs (CWOP) 0.24 in 6432
Rock Springs Airport (ASOS) 0.20 in 6759
Green River (COOP) 0.20 in 6160
...Teton County...
Moran 2 (CWOP) 0.55 in 6748
Burro Hill 0.44 in 7250
Alta (CWOP) 0.41 in 6460
Jackson 1 (CWOP) 0.33 in 6236
Coyote Meadows 0.28 in 6830
Jackson 2 (CWOP) 0.24 in 6158
Rendezvous Bowl (JHMR) 0.19 in 9634
B-T Portable No. 1 0.18 in 6631
Alta (HADS) 0.16 in 6430
Hoback (CWOP) 0.16 in 5928
Mid Mtn (JHMR) 0.15 in 8225
Jackson (HADS) 0.14 in 6240
YNP S Entrance 5 SSW (HADS) 0.14 in 7020
Teton Pass MP12 (DOTAV) 0.14 in 8007
Raymer (JHMR) 0.13 in 9657
YNP S Entrance (HADS) 0.12 in 6898
Grand Teton 0.12 in 6729
Jackson Airport (AWOS) 0.11 in 6450
Old Faithful (HADS) 0.11 in 7319
Moran 1 (CWOP) 0.10 in 6867
...Washakie County...
Ten Sleep 0.3 SSW (COCO) 0.31 in 4426
Worland 9.6 N (COCO) 0.28 in 4043
Worland 2.3 NE (COCO) 0.22 in 4107
Worland (AWS) 0.22 in 4400
Worland Airport (ASOS) 0.21 in 4226
Leigh Creek 0.19 in 8202
Worland (CWOP) 0.19 in 4064
Pistol Draw 0.19 in 4520
Split Rock Creek 0.16 in 6554
Worland 8 SW (COCO) 0.13 in 4136
Observations are collected from a variety of sources with varying
equipment and exposures. We thank all volunteer weather observers
for their dedication. Not all data listed are considered official.
$$
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If you plan to travel, we recommend checking road conditions along your route and staying on top of road closures here. If you are on Twitter, follow the hashtag: #WyoRoad (or look below) for the latest weather affecting roads and road conditions in and around Wyoming.
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