Sep Record Maximum Temperatures Date Station ID Station Name New Record Old Record Set in # of Years Sep-01 USS0010E12S SNAKE RIVER STATION 88 86 2019 28 Sep-02 USS0010E12S SNAKE RIVER STATION 88 87 2022 28 Sep-06 USS0010E15S GRASSY LAKE 90 86 2022 37 Sep-11 488884 THERMOPOLIS 9NE 90 89 2021 20 Sep Record Minimum Temperatures Date Station ID Station Name New Record Old Record Set in # of Years Sep-04 USS0007E40S LITTLE GOOSE 32 33 2014 16 Sep-05 482399 DAYTON 29 33 2011 21 Sep-05 94088 SUNDANCE 8 NNW 32 33 2017 19 Sep-05 USS0006H24S CINNABAR PARK 28 32 2004 22 Sep-05 USS0006H27S MED BOW 33 34 2024 14 Sep-05 USS0007E32S BIG GOOSE 30 31 2014 28 Sep-05 USS0007E40S LITTLE GOOSE 29 33 2010 16 Sep-06 24029 SHERIDAN AIRPORT 31 34 1956 86 Sep-06 24048 GREYBULL SOUTH BIG HORN COUNTY AP 39 40 2015 27 Sep-06 24062 WORLAND MUNICIPAL AP 37 39 1969 66 Sep-06 24089 CASPER-NATRONA COUNTY AP 32 33 1956 78 Sep-06 480680 BIG HORN 34 38 2010 23 Sep-06 481569 CASPER WASTE WATER TREATMENT PLANT 36 42 2010 23 Sep-06 94054 BUFFALO JOHNSON COUNTY AP 39 40 2010 26 Sep-06 USR0000WDEV DEVILS TOWER WYOMING 26 30 2017 27 Sep-07 487529 RAWLINS 1N 42 43 2016 15 Sep Record Precipitation Amounts Date Station ID Station Name New Record Old Record Set in # of Years Sep-01 US1WYLM0024 CHEYENNE 8.9 N 0.45 0.13 2017 20 Sep-02 US1WYAB0160 LARAMIE 6.1 SSE 0.01 0.00 2017 7 Sep-02 US1WYBH0035 BYRON 2.9 WSW 0.01 0.00 2024 2 Sep-02 US1WYJN0031 BUFFALO 1.8 NE 0.03 0.00 2016 9 Sep-02 US1WYWH0012 WORLAND 2.8 NE 0.02 0.00 2015 11 Sep-02 USS0007E40S LITTLE GOOSE 0.10 0.00 2011 15 Sep-03 485417 LARAMIE 4SE 0.07 0.06 2007 26 Sep-03 US1WYAB0072 LARAMIE 0.1 S 0.07 0.00 2021 4 Sep-03 US1WYAB0116 LARAMIE 0.8 SE 0.05 0.02 2016 6 Sep-03 US1WYAB0160 LARAMIE 6.1 SSE 0.02 0.00 2017 7 Sep-03 US1WYAB0162 LARAMIE 3.5 SSW 0.04 0.01 2023 9 Sep-03 US1WYAB0198 LARAMIE 24.8 WSW 0.03 0.00 2023 3 Sep-03 US1WYAB0200 LARAMIE 3.2 SE 0.06 0.04 2023 3 Sep-03 US1WYLM0229 LARAMIE 21.7 ENE 0.04 0.00 2023 3 Sep-03 US1WYNT0053 CASPER 4.7 SSW 0.05 0.02 2021 12 Sep-05 US1WYLM0213 CHEYENNE 0.5 SE 0.03 0.01 2023 6 Sep-06 US1WYLN0029 ALPINE 5.9 S 0.03 0.00 2020 5 Sep-07 483582 FOSSIL BUTTE 0.38 0.32 1991 34 Sep-07 485839 LYMAN 0.14 0.05 2019 8 Sep-07 487847 ROCK SPRINGS FIRE DEPARTMENT 0.16 0.02 2013 23 Sep-07 94173 YELLOWSTONE LAKE 0.76 0.49 2002 27 Sep-07 OFAW4 OLD FAITHFUL 0.02 0.00 2024 2 Sep-07 US1WYLN0029 ALPINE 5.9 S 0.14 0.00 2020 5 Sep-07 US1WYLN0032 STAR VALLEY RANCH 1.0 S 0.06 0.00 2023 3 Sep-07 US1WYPK0047 MEETEETSE 4.8 NNE 0.17 0.00 2022 3 Sep-07 US1WYSL0009 PINEDALE 0.7 NNW 0.02 0.01 2019 11 Sep-07 US1WYSL0019 PINEDALE 1.9 WSW 0.03 0.00 2020 5 Sep-07 US1WYTT0040 JACKSON 0.3 ENE 0.01 0.00 2023 3 Sep-07 US1WYUN0020 EVANSTON 17.5 SSE 0.12 0.00 2022 4 Sep-07 US1WYUN0025 BEAR RIVER 0.8 NE 0.05 0.00 2023 3 Sep-07 USS0005H02S CROW CREEK 0.20 0.10 2011 22 Sep-07 USS0010G13S SNIDER BASIN 0.40 0.30 1991 45 Sep-07 USS0010G20S SPRING CREEK DIVIDE 0.70 0.50 1991 44 Sep-08 OFAW4 OLD FAITHFUL 0.25 0.01 2022 3 Sep-08 US1WYAB0072 LARAMIE 0.1 S 0.01 0.00 2021 4 Sep-08 US1WYBH0031 GREYBULL 12.9 ENE 0.03 0.00 2023 3 Sep-08 US1WYCV0032 ESTERBROOK 0.1 WSW 0.19 0.00 2023 3 Sep-08 US1WYFM0076 LANDER 0.4 WNW 0.01 0.00 2023 3 Sep-08 US1WYFM0081 LANDER 5.9 SSE 0.04 0.00 2023 3 Sep-08 US1WYGS0039 LINGLE 5.9 W 0.14 0.00 2016 9 Sep-08 US1WYGS0057 TORRINGTON 0.8 E 0.04 0.00 2023 3 Sep-08 US1WYGS0058 TORRINGTON 5.2 W 0.08 0.00 2023 2 Sep-08 US1WYGS0062 FORT LARAMIE 0.2 S 0.40 0.00 2024 2 Sep-08 US1WYLM0007 CHEYENNE 1.0 NNW 0.31 0.00 2012 4 Sep-08 US1WYLM0064 CHEYENNE 3.2 NNE 0.11 0.04 2008 14 Sep-08 US1WYLM0096 BURNS 3.5 NW 0.35 0.14 2020 17 Sep-08 US1WYLM0121 CHEYENNE 11.1 NW 0.04 0.02 2015 13 Sep-08 US1WYLM0131 CHEYENNE 3.0 NNW 0.17 0.06 2020 11 Sep-08 US1WYLM0198 CHEYENNE 10.2 ESE 0.38 0.30 2020 8 Sep-08 US1WYLM0214 CHEYENNE 7.9 N 0.30 0.00 2019 3 Sep-08 US1WYLM0226 CHEYENNE 18.3 WNW 0.03 0.00 2023 3 Sep-08 US1WYLM0230 CHEYENNE 8.5 N 0.22 0.00 2023 3 Sep-08 US1WYLM0232 CHEYENNE 3.3 ESE 0.07 0.00 2023 3 Sep-08 US1WYLM0235 CHEYENNE 5.4 ENE 0.14 0.00 2023 3 Sep-08 US1WYLM0238 ALBIN 13.2 W 0.09 0.05 2024 3 Sep-08 US1WYLM0246 CHEYENNE 2.6 ENE 0.10 0.00 2023 3 Sep-08 US1WYLM0248 HILLSDALE 2.6 NE 0.12 0.00 2023 3 Sep-08 US1WYLM0251 CHEYENNE 6.8 ENE 0.05 0.00 2024 2 Sep-08 US1WYLM0252 CHEYENNE 0.7 WSW 0.15 0.00 2024 2 Sep-08 US1WYLM0258 CHUGWATER 13.1 WSW 0.03 0.00 2024 2 Sep-08 US1WYLN0002 SMOOT 4.9 SSE 0.21 0.12 2014 21 Sep-08 US1WYLN0032 STAR VALLEY RANCH 1.0 S 0.04 0.00 2023 3 Sep-08 US1WYLN0036 BEDFORD 1.8 S 0.10 0.00 2023 3 Sep-08 US1WYNT0044 CASPER 2.0 ENE 0.11 0.00 2011 7 Sep-08 US1WYNT0076 CASPER 2.0 SW 0.18 0.00 2015 3 Sep-08 US1WYNT0092 CASPER 0.7 WSW 0.13 0.00 2022 4 Sep-08 US1WYNT0094 CASPER 1.2 E 0.22 0.00 2022 4 Sep-08 US1WYNT0098 CASPER 3.9 WSW 0.20 0.00 2023 3 Sep-08 US1WYNT0100 CASPER 1.7 W 0.12 0.00 2023 3 Sep-08 US1WYPK0007 CODY 2.4 WSW 0.33 0.17 2020 20 Sep-08 US1WYPK0013 POWELL 3.9 ENE 0.34 0.09 2020 16 Sep-08 US1WYPK0016 CODY 7.2 NNE 0.08 0.07 2008 11 Sep-08 US1WYPK0037 CODY 2.0 NE 0.66 0.11 2020 8 Sep-08 US1WYPK0045 POWELL 24.2 WNW 0.10 0.00 2021 5 Sep-08 US1WYPK0047 MEETEETSE 4.8 NNE 0.02 0.00 2022 3 Sep-08 US1WYPK0048 CODY 9.7 NNE 0.19 0.00 2023 3 Sep-08 US1WYPK0049 CODY 2.9 ESE 0.33 0.00 2023 3 Sep-08 US1WYPK0054 CODY 20.9 W 0.02 0.00 2023 2 Sep-08 US1WYPK0055 CODY 21.9 W 0.03 0.00 2023 3 Sep-08 US1WYPK0056 MEETEETSE 0.2 NE 0.04 0.00 2023 3 Sep-08 US1WYPK0060 CODY 4.3 NNE 0.22 0.00 2024 2 Sep-08 US1WYPT0035 GUERNSEY 0.3 SW 0.28 0.00 2022 4 Sep-08 US1WYPT0040 WHEATLAND 8.4 SW 0.07 0.00 2023 3 Sep-08 US1WYPT0041 WHEATLAND 4.9 SW 0.08 0.00 2023 3 Sep-08 US1WYSL0009 PINEDALE 0.7 NNW 0.08 0.06 2020 10 Sep-08 US1WYSW0026 GREEN RIVER 1.1 SSE 0.14 0.03 2019 12 Sep-08 US1WYSW0030 ROCK SPRINGS 4.4 NNW 0.04 0.00 2015 10 Sep-08 US1WYSW0032 GREEN RIVER 1.8 SSE 0.09 0.00 2016 9 Sep-08 US1WYSW0036 GREEN RIVER 0.8 SSW 0.18 0.00 2022 4 Sep-08 US1WYTT0040 JACKSON 0.3 ENE 0.01 0.00 2023 3 Sep-08 US1WYUN0025 BEAR RIVER 0.8 NE 0.18 0.00 2023 3 Sep-09 24166 JACKSON HOLE AP 0.20 0.01 2019 11 Sep-09 US1WYSW0036 GREEN RIVER 0.8 SSW 0.04 0.00 2022 4 Sep-09 US1WYTT0009 JACKSON 12.3 NE 0.05 0.00 2008 10 Sep-09 US1WYUN0025 BEAR RIVER 0.8 NE 0.18 0.00 2023 3 Sep-10 04131 MOOSE 1 NNE 1.78 0.17 2008 22 Sep-10 489025 TOWER FALLS 0.80 0.41 1972 74 Sep-10 OFAW4 OLD FAITHFUL 0.01 0.00 2021 4 Sep-10 US1WYAB0072 LARAMIE 0.1 S 0.28 0.00 2021 4 Sep-10 US1WYAB0138 LARAMIE 1.8 ENE 0.40 0.00 2015 10 Sep-10 US1WYAB0160 LARAMIE 6.1 SSE 0.03 0.02 2024 9 Sep-10 US1WYAB0162 LARAMIE 3.5 SSW 0.14 0.00 2017 9 Sep-10 US1WYAB0180 LARAMIE 1.6 ENE 0.44 0.00 2020 6 Sep-10 US1WYAB0186 LARAMIE 1.2 NNE 0.09 0.00 2022 4 Sep-10 US1WYAB0196 LARAMIE 1.4 N 0.06 0.02 2024 3 Sep-10 US1WYAB0200 LARAMIE 3.2 SE 0.07 0.00 2023 3 Sep-10 US1WYCM0039 GILLETTE 8.5 ESE 0.01 0.00 2024 2 Sep-10 US1WYCR0037 SARATOGA 0.9 SSW 0.03 0.00 2023 3 Sep-10 US1WYFM0072 DUBOIS 6.0 ESE 0.07 0.00 2023 2 Sep-10 US1WYHS0024 THERMOPOLIS 33.2 W 0.10 0.00 2023 2 Sep-10 US1WYLM0164 CHEYENNE 4.0 N 0.31 0.16 2022 11 Sep-10 US1WYLM0178 CHEYENNE 2.9 NNW 0.13 0.02 2019 2 Sep-10 US1WYLM0214 CHEYENNE 7.9 N 0.07 0.01 2019 3 Sep-10 US1WYLM0226 CHEYENNE 18.3 WNW 0.04 0.00 2023 3 Sep-10 US1WYLM0235 CHEYENNE 5.4 ENE 0.02 0.00 2023 3 Sep-10 US1WYLM0246 CHEYENNE 2.6 ENE 0.02 0.00 2023 3 Sep-10 US1WYLM0252 CHEYENNE 0.7 WSW 0.02 0.00 2024 2 Sep-10 US1WYLM0258 CHUGWATER 13.1 WSW 0.04 0.00 2024 2 Sep-10 US1WYLN0029 ALPINE 5.9 S 0.02 0.00 2020 6 Sep-10 US1WYNT0098 CASPER 3.9 WSW 0.20 0.03 2023 3 Sep-10 US1WYPK0043 MEETEETSE 2.0 SE 0.06 0.01 2022 6 Sep-10 US1WYSH0062 SHERIDAN 1.5 N 0.01 0.00 2024 2 Sep-10 US1WYSH0064 SHERIDAN 2.9 S 0.05 0.00 2024 2 Sep-10 US1WYSL0018 PINEDALE 5.0 SE 0.01 0.00 2020 6 Sep-10 US1WYSL0019 PINEDALE 1.9 WSW 0.04 0.00 2020 5 Sep-10 US1WYSW0036 GREEN RIVER 0.8 SSW 0.32 0.00 2022 4 Sep-10 US1WYSW0043 ROCK SPRINGS 1.0 SSE 0.03 0.01 2024 2 Sep-10 US1WYTT0013 JACKSON 5.3 NW 0.16 0.00 2015 6 Sep-10 US1WYTT0040 JACKSON 0.3 ENE 0.09 0.00 2023 3 Sep-11 OFAW4 OLD FAITHFUL 0.04 0.00 2022 2 Sep-11 US1WYBH0030 LOVELL 0.5 ESE 0.02 0.00 2023 3 Sep-11 US1WYBH0035 BYRON 2.9 WSW 0.13 0.00 2024 2 Sep-11 US1WYFM0079 LANDER 5.1 SW 0.01 0.00 2024 2 Sep-11 US1WYGS0062 FORT LARAMIE 0.2 S 0.09 0.00 2024 2 Sep-11 US1WYLM0164 CHEYENNE 4.0 N 0.15 0.12 2022 11 Sep-11 US1WYLM0178 CHEYENNE 2.9 NNW 0.09 0.02 2019 5 Sep-11 US1WYLM0235 CHEYENNE 5.4 ENE 0.18 0.05 2023 3 Sep-11 US1WYLM0238 ALBIN 13.2 W 0.01 0.00 2023 3 Sep-11 US1WYLM0246 CHEYENNE 2.6 ENE 0.09 0.02 2023 3 Sep-11 US1WYLM0251 CHEYENNE 6.8 ENE 0.21 0.00 2024 2 Sep-11 US1WYLM0254 CHEYENNE 4.5 NNE 0.01 0.00 2024 2 Sep-11 US1WYLM0258 CHUGWATER 13.1 WSW 0.02 0.00 2024 2 Sep-11 US1WYNT0098 CASPER 3.9 WSW 0.03 0.02 2023 3 Sep-11 US1WYPK0045 POWELL 24.2 WNW 0.04 0.00 2022 4 Sep-11 US1WYPK0055 CODY 21.9 W 0.06 0.00 2023 3 Sep-11 US1WYPK0060 CODY 4.3 NNE 0.09 0.00 2024 2 Sep-11 US1WYPT0046 CHUGWATER 9.6 ESE 0.08 0.00 2024 2 Sep-11 US1WYTT0040 JACKSON 0.3 ENE 0.22 0.17 2024 3 Sep Record Snowfall Totals Date Station ID Station Name New Record Old Record Set in # of Years Sep Record Snowdepth Amounts Date Station ID Station Name New Record Old Record Set in # of Years Sep-01 USS0006H27S MED BOW 1 0 2012 14 Sep-02 USS0009F21S NEW FORK LAKE 2 0 2006 20 Sep-02 USS0010E09S LEWIS LAKE DIVIDE 1 0 2004 22 Sep-02 USS0010F02S BASE CAMP 1 0 2013 13 Sep-03 USS0009F21S NEW FORK LAKE 2 0 2006 20 Sep-03 USS0010E09S LEWIS LAKE DIVIDE 1 0 2004 22 Sep-03 USS0010F02S BASE CAMP 1 0 2013 13 Sep-03 USS0010G15S TRIPLE PEAK 1 0 2005 21 Sep-04 USS0009F21S NEW FORK LAKE 2 0 2006 20 Sep-04 USS0009F28S GUNSIGHT PASS 1 0 1998 26 Sep-04 USS0010E09S LEWIS LAKE DIVIDE 2 0 2004 22 Sep-04 USS0010F02S BASE CAMP 1 0 2013 13 Sep-04 USS0010G23S WILLOW CREEK 1 0 2010 16 Sep-05 USS0005G05S WINDY PEAK 1 0 2003 23 Sep-05 USS0005H02S CROW CREEK 1 0 2004 21 Sep-05 USS0009F21S NEW FORK LAKE 2 0 2006 20 Sep-05 USS0009F28S GUNSIGHT PASS 1 0 1998 26 Sep-05 USS0010E09S LEWIS LAKE DIVIDE 2 0 2004 22 Sep-05 USS0010F02S BASE CAMP 1 0 2013 13 Sep-05 USS0010G15S TRIPLE PEAK 1 0 2005 21 Sep-05 USS0010G23S WILLOW CREEK 1 0 2010 16 Sep-06 USS0006H24S CINNABAR PARK 1 0 2004 22 Sep-06 USS0006H27S MED BOW 1 0 2012 14 Sep-06 USS0009F21S NEW FORK LAKE 2 0 2006 20 Sep-06 USS0009F28S GUNSIGHT PASS 1 0 1998 26 Sep-06 USS0010E09S LEWIS LAKE DIVIDE 2 0 2004 22 Sep-06 USS0010F02S BASE CAMP 1 0 2013 13 Sep-06 USS0010G23S WILLOW CREEK 1 0 2010 16 Sep-06 USS0010G24S HAMS FORK 1 0 2010 16 Sep-07 USS0006H27S MED BOW 1 0 2012 14 Sep-07 USS0009F21S NEW FORK LAKE 2 0 2006 20 Sep-07 USS0009F28S GUNSIGHT PASS 1 0 1998 26 Sep-07 USS0010E09S LEWIS LAKE DIVIDE 2 0 2004 22 Sep-07 USS0010F02S BASE CAMP 1 0 2013 13 Sep-07 USS0010G08S SALT RIVER SUMMIT 1 0 2011 15 Sep-07 USS0010G23S WILLOW CREEK 1 0 2010 16 Sep-08 USS0008F01S OWL CREEK 1 0 2003 23 Sep-08 USS0009F21S NEW FORK LAKE 2 0 2006 20 Sep-08 USS0010E09S LEWIS LAKE DIVIDE 2 0 2004 22 Sep-08 USS0010F02S BASE CAMP 1 0 2013 13 Sep-08 USS0010G15S TRIPLE PEAK 1 0 2005 21 Sep-08 USS0010G24S HAMS FORK 1 0 2010 16