Preliminary
Wyoming Monthly Climatology
April 2002
Statewide Summary
The average temperature in April 2002 was 40.9°F. This was 1.0° F warmer than the 1895-2002 average, the 40th warmest April in 108 years. The temperature trend for the period of record (1895 to present) is 0.1 degrees Fahrenheit per decade.
1.07 inches of precipitation fell in April. This was -0.30 inches less than the 1895-2002 average, the 39th driest such month on record. The precipitation trend for the period of record (1895 to present) is 0.00 inches per decade.
Cheyenne
The average temperature in April was 44.4°F. This is 2.8°F warmer than normal and represents the 21th (tied) warmest April on record (since 1895). The maximum temperature for the month was 75°F on the 15th and the minimum of 13°F occurred on the 2nd. No record temperatures occurred during the month. Precipitation total of 0.69 inch is 45 percent of normal and is the 17th driest April in 108 years of record keeping. Snowfall totaled 1.7 inches which is 17 percent of the long-term average.
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Laramie
The average temperature in April was 40.8°F. This is 3.7°F warmer than normal. The maximum for the month was 69°F on the 14th and the minimum of 13°F occurred on the 3rd. No record temperatures occurred during the month. Precipitation total of 0.23 inch is 22 percent of normal. Snowfall totaled 1.4 inches and is 19 percent of the long-term average.
Rawlins
The average temperature in April was 41.8°F. This is 0.2°F warmer than normal. The maximum temperature for the month was 70°F on the 14th and 15th and the minimum of 12°F occurred on the 3rd. No record temperatures occurred during the month. Precipitation total of 0.90 inch is 85 percent of normal. Snowfall totaled of 3.7 inches and is 52 percent of the long-term average.
Rock Springs
The average temperature in April was 42.8°F. This is 3.1°F warmer than normal. The maximum temperature for the month was 71°F on the 14th and the minimum of 13°F occurred on the 3rd. No record temperature occurred during the month. Precipitation total of 0.72 inch is 71 percent of normal. Snowfall totaled 4.8 inches and is 77 percent of the long-term average.
Evanston
The average temperature in April was 40.5°F. This is 1.6°F warmer than normal. The maximum temperature for the month was 67°F on the 14th and the minimum of 16°F occurred on the 18th. No record temperatures occurred during the month. Precipitation total of 1.19 inches is 105 percent of normal. Snowfall totaled 7.4 inches and is 142 percent of the long-term average.
Lander
The average temperature in April was 43.5°F. This is 0.4°F colder than normal.
The maximum temperature for the month was 76°F on the 14th and the minimum of 14°F
occurred on the 3rd and 21st. No record temperatures occurred during the month. Precipitation total of 1.27 inches is 61 percent of normal. Snowfall totaled 14.9 inches and is 71 percent of the long-term average.
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Sheridan
The average temperature in April was 40.5°F. This is 3.4°F colder than normal. The maximum temperature for the month was 81°F on the 14th and the minimum of 3°F occurred on the 2nd and 3rd. No record temperatures occurred during the month. Precipitation total of 1.47 inches is 83 percent of normal. Snowfall totaled 4.5 inches and is 42 percent of the long-term average.
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Casper
The average temperature in April was 42.8°F and is 0.1°F above normal for the month.
The maximum temperature for the month was 77°F on the 14th (also record for the day) and the minimum of 9°F
occurred on the 2nd. Precipitation total of 0.77 inch is 51 percent of normal. Snowfall totaled of 10.8 inches and is 86 percent of the long-term average.
past 30-days precipitation
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Additional Stations:
Big Piney
Buffalo
Douglas
Gillette
Greybull
Riverton
Torrington
Worland
Yellowstone
This information was compiled by the Wyoming State Climatologist, University of Wyoming. For more information, contact Jan Curtis at (307) 766-6659. For periodic updates, visit http://www.wrds.uwyo.edu This site includes a searchable database for Wyoming climate and water. For additional daily and hourly climatology, click on this interactive map by selecting a city. Then click on the "Monthly History" link on the left menu. Record daily temperatures are based on the period since 1949 for all cities.
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