Climate Summaries for Wyoming as of July 31 2015

Riverton Forecast Office has provided the climate data for much of Western Wyoming covering the period through July 2015.

Following are some rainfall totals around Star Valley for July 2015.

Star Valley Ranch            2.62
Bedford                              2.48
2 SE Thayne                      2.05
5  SSE Smoot                     1.86
Afton                                   1.53

Climate Summaries 2014-2015 Water Year Precipitation and Percent of Normal for Selected Stations Wyoming Temperature and Precipitation Maps & Rankings Previous Annual and Water Year Summaries (2011-2014) More Historical Climate Data from Utah State Station Name: Airports Drought Conditions Oct 2014 Nov 2014 Dec 2014 Jan 2015 Feb 2015 Mar 2015 Apr 2015 May 2015 Jun 2015 Jul 2015 Aug 2015 Sep 2015 Total for Water Year  click on location D0 D1  for graph D2 D3 D4 Big Piney  D0 0.09 0.05 0.12 0.01 0.05 0.06 0.56 2.30 0.23 1.73 5.20 1981-2010 Normals  0.53  0.21  0.30  0.31  0.35  0.44  0.53  0.84 0.79  0.71  0.69  0.78  5.01 Percent of Normal   17  24  40  3  14 14 106 274 29 244  104 Buffalo None 0.21 0.34 0.08  0.16 0.48 0.08 0.78 5.76 3.23 0.77 11.89 1981-2010 Normals  0.93  0.54  0.40  0.42  0.35  0.92  1.30  2.53  2.28  1.66  0.81  1.31  11.33   Percent of Normal   23  63  20  38  137 9 60 228 142 46  105 Casper   None 1.05 0.81 1.25 0.52 0.79 0.64 1.66 3.89 1.50 0.57 12.68 1981-2010 Normals  1.11  0.76  0.49  0.51 0.57  0.82  1.29  2.02  1.61  1.41  0.85  1.08  10.59   Percent of Normal   95  107  255  102 139 78 129 193 93 40  120 Snowfall  3.2  10.6 17.8 6.4  12.4 9.3 4.7 6.3 0.0 0.0 70.7 1981-2010 Normals 7.4  10.3 11.0 9.1 9.8 10.9 11.6 2.9 0.1 0.0 0.0 1.8 73.1   Percent of Normal   43 103  162  70  127 85 41 217 0 0  97 Evanston   D0 0.11 0.59 0.18 0.64 0.37 0.44 0.57 4.49 0.64 0.88 8.91   1981-2010 Normals 1.17 1.04 0.58 0.54 0.61 0.86 1.15 1.77 1.24 0.90 0.96 1.31  9.86   Percent of Normal   9  57  31  119  61 51 50 254 52 98  90 Greybull   None 0.01 0.59 0.21 0.22 0.04 0.14 0.11 1.07 0.25 T 2.64   1981-2010 Normals  0.60  0.30  0.28  0.23  0.18  0.40  0.71  1.65  1.20  0.66  0.42  0.88  6.21   Percent of Normal  2 197  75  96 22 35 15 65 21 0 43 Station Name: Airports Drought Conditions Oct 2014 Nov 2014 Dec 2014 Jan 2015 Feb 2015 Mar 2015 Apr 2015 May 2015 Jun 2015 Jul 2015 Aug 2015 Sep 2015 Total for Water Year Lander  None 0.50 0.59 1.82 T 1.56 0.55 2.31 6.10 0.80 0.50 14.73   1981-2010 Normals  1.29  0.86  0.58  0.41  0.58  1.16  1.87  2.20  1.27  0.78 0.61  1.05 11.00   Percent of Normal   39  69  209  0  269 47 124 277 63 64  134 Snowfall  T  8.9  21.1  0.3  23.6 8.9 10.3 0.8 0.0 0.0 73.9 1981-2010 Normals 9.8  13.1 10.1 7.6 10.3 16.1 16.8 4.8 0.1 0.0 0.0 2.7  88.7   Percent of Normal   0  68 209  4  229 55 61 17 0 0 83 Riverton  None 0.16 0.42 0.65 0.03 1.04 0.41 0.82 4.55 0.79 1.10  9.97   1981-2010 Normals  0.89  0.50  0.32  0.24  0.27  0.55  1.30  1.72  1.28  0.89  0.57  0.90  7.96   Percent of Normal   18  84  203  13  385 75 63 265 62 124 125 Snowfall  17.5  1.5  6.8  0.4  15.8 6.7 3.3 0.5 0.0  0.0  38.8 Rock Springs  None 0.32 0.13 0.11 0.01 0.08 0.22 0.67 3.10 1.11 2.12 7.87  1981-2010 Normals  0.87  0.49  0.50  0.45  0.48  0.68  0.91  1.21  0.79  0.64  0.62  0.92  7.02   Percent of Normal  37  27 22  0.4  17 32 74 256 141 331  112 Sheridan   None 0.16 1.49  0.74 0.45 1.28 0.40 1.43 5.42 3.05 0.84 15.26   1981-2010 Normals  1.41  0.71  0.56  0.56  0.54  0.98  1.60  2.35 2.12  1.18  0.72  1.43 12.01   Percent of Normal   11  210  132  80  237 41 89 231 144 71  127 Worland None 0.27 0.57  0.70 0.23 0.54 T 0.35 3.06 1.06 0.41  7.19   1981-2010 Normals 0.69 0.35 0.23  0.23 0.19 0.46 0.86 1.42 1.15 0.71 0.43 0.85  6.29   Percent of Normal   39  163  304  100  284 0 41 215 92 58  114 Station Name: COOPS Drought Conditions Oct 2014 Nov 2014 Dec 2014 Jan 2015 Feb 2015 Mar 2015 Apr 2015 May 2015 Jun 2015 Jul 2015 Aug 2015 Sep 2015 Total for Water Year Afton  D0 0.65 1.56 1.48 0.58 0.88 0.62 1.47 4.84 1.36 1.53 14.97   1981-2010 Normals 1.63 2.04 1.25 1.40 1.09 1.40 1.54 2.26 1.97 1.43 1.25 1.46 15.45   Percent of Normal   40 105  118 41  81 44 95 214 69 107 97 Snowfall  0.2  13.9  24.2  9.6  6.5 5.9 6.7 0.0 0.0 0.0 67.0 Bitter Creek 4NE None 0.17 0.53 0.34 0.09 0.13 0.70 0.34 3.82 1.54 2.57 10.21   1981-2010 Normals 0.66 0.31 0.51 0.28 0.36 0.30 0.65 1.09 0.70 0.60 0.75 0.73  5.46   Percent of Normal   26  171 67  32 36 233 52 350 220 428  187 Cody  None 0.42 1.54 1.29 0.10 0.87 0.20 1.66 5.10 0.92 0.52 12.62   1981-2010 Normals 0.89 0.48 0.33 0.33 0.33 0.56 1.06 1.82 1.68 1.11 0.91 1.06  8.59   Percent of Normal   47  321  391  30  264 36 157 280 55 47  147 Snowfall  0.0  19.0  14.0  2.0  7.0 1.5 4.0 0.0 0.0 0.0 47.5 1981-2010 Normals 4.3 6.3 8.0 7.8 6.7 6.9 6.3 0.8 0.0 0.0 0.0 0.2 47.1   Percent of Normal  0  302  175  26  104 22 63 0 0 0  101 Dubois  None 0.40 1.00 0.69 0.15 0.46 0.35 0.55 3.28 1.31 1.62  9.81   1981-2010 Normals 0.81 0.57 0.28 0.24 0.38 0.40 1.10 1.64 1.28 1.11 0.86 1.24  7.81   Percent of Normal  49  175  246  63  121 88 50 200 102 146  126 Snowfall 1.0  13.5  16.5  2.0  10.6 5.5 4.5 T 0.0 0.0 53.6 1981-2010 Normals 3.0 5.8 5.1 3.9 5.7 6.0 8.5 3.9 0.6 0.0 0.0 2.6 42.5   Percent of Normal  33  233  324  51  186 92 53 0 0 0 126 Fossil Butte National Monument   D0 0.52 0.55 0.78  0.23 0.51 0.68 0.61 4.90 0.81 0.70  10.29 1981-2010 Normals 1.11 0.86 0.74 0.49 0.68 0.82 0.98 1.41 1.03 0.85 0.93 1.10  8.97   Percent of Normal  47  64  105 47  75 83 62 348 79 82  115 Snowfall T  7.8  10.7  2.2  4.3 6.0 5.7 3.0 0.0 0.0  39.7 Green River  None 0.36 0.38 1.07 T 0.30 0.92 1.52 4.67 1.44 1.10  11.76   1981-2010 Normals 0.81 0.41 0.44  0.34  0.43 0.71  0.85 1.23 0.98 0.55  0.68  0.90  6.75   Percent of Normal  44  93  243 0  70 130 179 380 147 200  174 Snowfall 0.0  T  9.8 T  2.0 7.0 6.5 T 0.0 0.0  25.3 1981-2010 Normals 0.5 3.8 6.5 4.6 7.3 5.0 3.9 0.6 0.0 0.0 0.0 0.0 32.2 Percent of Normal 0  0  151 0  27 140 167 0 0 0  79 Station Name: COOPS Drought Conditions Oct 2014 Nov 2014 Dec 2014 Jan 2015 Feb 2015 Mar 2015 Apr 2015 May 2015 Jun 2015 Jul 2015 Aug 2015 Sep 2015 Total for Water Year Jeffrey City  None 0.11 0.21 1.21 0.20 0.40 0.79 1.94 4.70 0.67 1.00  11.23   1981-2010 Normals 0.91 0.59 0.42  0.31  0.41 0.86  1.27 1.85 1.15 0.89  0.60  0.80  8.66   Percent of Normal  12  36  288 65  98 92 153 254 58 112  130 Snowfall 0.0  2.1  16.0 3.0  7.0 9.0 20.0 7.0 0.0 0.0 64.1 1981-2010 Normals 7.3 6.6 5.5 4.6 6.7 9.4 10.2 4.9 0.4 0.0 0.0 1.4  55.6   Percent of Normal  0  32 291 65  104 96 196 143 0 0  115 Kaycee  None 0.51 0.56 0.77 0.32 0.87 0.02 1.16 6.00 1.03 0.74  11.98   1981-2010 Normals 1.04 0.57 0.31 0.30 0.34 0.74 1.46 2.37 1.84 1.42 0.80 1.18  10.39   Percent of Normal  49  98  248  107  256 3 79 253 56 52  115 Snowfall T  8.5  10.0  3.5  12.0 T T 3.0 0.0 0.0 37.0 1981-2010 Normals 1.5 4.2 6.0 5.9 6.3 8.0 4.7 0.6 0.1 0.0 0.0 0.2 37.3   Percent of Normal  0  202  167  59  190 0 0 500 0 0 99 Moose   D0 0.54  3.55 3.26 2.31 1.57 0.67 0.80 3.83 1.03 2.72  20.28   1981-2010 Normals 1.47 2.64 2.67 2.58 1.82 1.62 1.49 1.88 1.61 1.29 1.29 1.44  19.07   Percent of Normal  37  134  122 90  86 41 54 204 64 211 106 Snowfall T  43.3  39.6  26.0  19.1 11.0 5.4 0.0 0.0 0.0  144.4 1981-2010 Normals 4.8 24.1 44.7 36.9 26.6 15.9 7.4 2.2 0.0 0.0 0.0 0.2  162.6   Percent of Normal  0  180  89  70  72 69 73 0 0 0 89 Old Faithful  D0 1.73 2.49 2.46 1.23 0.75 0.77 0.94 3.75 1.24 2.14 17.50   1981-2010 Normals 1.66 2.29 3.16  2.11 1.99 2.21 2.21 2.80 2.47 1.55 1.46 1.46  22.45   Percent of Normal   104  109 78  58  38 35 43 134 50 138 78 Snowfall 2.0  20.0  36.3  30.0  6.0  1.0 3.5 T 0.0 0.0  98.8 1981-2010 Normals 7.7 31.7 43.8 37.5 31.1 26.8 19.3 7.3 1.2 0.0 0.0 1.4  206.4   Percent of Normal  26  63  83  80  19 4 18 0 0 0 48 Powell Field Station   None 0.22 0.43 0.10 0.04 0.03 0.09 0.39 2.13 0.60 0.32  4.35   1981-2010 Normals 0.56 0.18 0.13 0.21 0.13 0.29 0.51 1.40 1.35 0.87 0.52  0.65  5.63   Percent of Normal  39 239 77  19  23 31 76 152 44 37 77 Snowfall 0.0  3.8  1.3  0.3  0.3 0.1 T 0.0 0.0 0.0 5.8 1981-2010 Normals  1.2 1.3 1.2 2.3 0.5 2.5 0.5 0.5 0.0 0.0 0.0 0.1 10.0   Percent of Normal  0  292  108  13  60 4 0 0 0 0  58 Riverton (downtown)  None 0.18 0.41 0.55 0.04 1.28 0.47 1.10 4.03 0.82 0.81 9.69   1981-2010 Normals 0.85 0.41 0.24 0.28 0.33 0.56 0.98 1.45 1.21 0.78 0.50 0.83  7.09   Percent of Normal  21  100 229  14  388 84 112 278 68 104  137 Snowfall T  7.8  7.4  0.7  17.8 6.6 1.8 T 0.0 0.0 42.1 1981-2010 Normals 3.7 4.3 4.8  4.8  6.0  5.9  6.1 1.2 0.0 0.0 0.0 0.3 36.8   Percent of Normal  0  181  154  15  297 112 30 0 0 0 114 Thermopolis   None 0.22 0.37 2.04 0.14 0.92 0.06 1.60 4.54 1.50 0.38 11.77   1981-2010 Normals 1.26 0.80 0.46 0.35 0.45 0.87 1.46 1.86 1.51 0.88 0.58 1.23  9.90   Percent of Normal   17  46  443  40  204 7 110 244 99 43  119 Snowfall 0.0  9.0  23.0  3.0  3.5 1.0 T 0.0 0.0 0.0  39.5 1981-2010 Normals 2.4 3.7 4.5 5.6  4.6 2.5 2.8 0.4 0.0 0.0 0.0 0.2 26.5   Percent of Normal  0 243 511  54  76 40 0 0 0 0  149 Drought Classifications on July 28, 2015     |      XX.X / M - Data partially or completely missing

Wyoming Climate      |      Click on Image to Enlarge Statewide averages and ranks for periods including July 2015 will be available on August 6, 2015*  * 2015 Climate Monitoring Release Dates

Last Month Precipitation - Percent of Normal Temperature - Departure from Normal  Statewide Average (inches)  Statewide Average (°F)  20th Century Average 1.84  20th Century Average 57.6  Rank - Driest  to Wettest  (121 Years)  Rank - Warmest  to Coldest (121 Years)  Rank - Wettest to Driest (121 Years)  Rank - Coldest to Warmest (121 Years)  Driest Month on Record: Jun 2012 0.45   Warmest Month on Record: Jun 1988 66.4  Wettest Year on Record: Jun 1967 4.33   Coldest Month on Record: Jun 1951 51.5 Last 3 Months Precipitation - Percent of Normal Temperature - Departure from Normal  Statewide Average (inches)  Statewide Average (°F)  20th Century Average 5.82  20th Century Average 48.3  Rank - Driest  to Wettest  (121 Years)  Rank - Warmest  to Coldest (121 Years)  Rank - Wettest to Driest (121 Years)  Rank - Coldest to Warmest (121 Years)  Driest Period on Record: Apr - Jun 1919 2.91  Warmest Period on Record: Apr - Jun 1988 53.1  Wettest Period on Record: Apr - Jun 1957 9.32  Coldest Period on Record: Apr - Jun 1917 43.7 2015 Precipitation - Percent of Normal Temperature - Departure from Normal  Statewide Average (inches)  Statewide Average (°F)  20th Century Average 9.10  20th Century Average 35.8  Rank - Driest  to Wettest  (121 Years)  Rank - Warmest  to Coldest (121 Years)  Rank - Wettest to Driest (121 Years)  Rank - Coldest to Warmest (121 Years)  Driest Period on Record: Jan - Jun 1919 4.72  Warmest Period on Record: Jan - Jun 1934 41.5  Wettest Period on Record: Jan - Jun 1899, 1995 12.70  Coldest Period on Record: Jan - Jun 1917 30.3 2014-2015 Water Year Precipitation - Percent of Normal Temperature - Departure from Normal  Statewide Average (inches)  Statewide Average (°F)  20th Century Average 12.34  20th Century Average 34.1  Rank - Driest  to Wettest  (120 Years)  Rank - Warmest  to Coldest (120 Years)  Rank - Wettest to Driest (120 Years)  Rank - Coldest to Warmest (120 Years)  Driest Periods on Record: Oct 1918 - Jun 1919 7.12  Warmest Period on Record: Oct 1933 - Jun 1934  39.7  Wettest Period on Record: Oct 1994 - Jun 1995  17.66  Coldest Period on Record: Oct 1916 - Jun 1917 28.6 Last 12 Months Precipitation - Percent of Normal Temperature - Departure from Normal  Statewide Average (inches)  Statewide Average (°F)  20th Century Average 15.94  20th Century Average 40.8  Rank - Driest  to Wettest  (120 Years)  Rank - Warmest  to Coldest (120 Years)  Rank - Wettest to Driest (120 Years)  Rank - Coldest to Warmest (120 Years)  Driest Period on Record: Jun 1933 - May 1934 11.11  Warmest Period on Record: Jul 1933 - Jun 1934  45.3  Wettest Period on Record: Jul 1994 - Jun 1995 20.33  Coldest Period on Record: Jul 1916 - Jun 1917 36.4 Last 5 Years (Aug 2010 - Jul 2015) Precipitation - Percent of Normal Temperature - Departure from Normal Map Not Available For This Period Map Not Available For This Period  Statewide Average (inches)  Statewide Average (°F)  20th Century Average 79.51  20th Century Average 40.7  Rank - Driest  to Wettest  (120 Years)  Rank - Warmest  to Coldest (120 Years)  Rank - Wettest to Driest (120 Years)  Rank - Coldest to Warmest (120 Years)  Driest Period on Record: Jul 1999 - Jul 2004 65.21  Warmest Period on Record: Jul 2002 - Jun 2007 42.8  Wettest Period on Record: Jul 1