August weather forecast
Wyoming, USA

August continues the summer warmth in Wyoming, although the month often serves as a transitional period leading into autumn. Average low temperatures hover between 50°F (10°C) and 60°F (15.6°C), similar to July, but average high temperatures begin to show subtle signs of cooling. In the plains, high temperatures usually stay below the July peak, often reaching up to 85°F (29.4°C). In higher elevations, the climate remains moderate with temperatures typically between 70°F (21.1°C) and 75°F (23.9°C).

When compared to July, August offers slightly shorter days and a small decrease in temperature, indicating the impending arrival of fall. While wind speeds generally lessen, winds can still provide a cooling relief during hot spells. Thunderstorms remain a weather event to watch for, although their frequency starts to diminish as summer winds down. August stands as the last month of peak tourist activity, especially in Wyoming's national parks. Trails remain open, and the state’s diverse flora starts showing early signs of the coming autumn, offering a different yet equally appealing natural spectacle.

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• Cheyenne - August »
  The months with the most sunshine are July and August, with an average of 11.6h of sunshine. In Cheyenne during August, the rain falls for 11.7 days and regularly aggregates up to 0.83" (21mm) of precipitation.
• Casper - August »
  The months with the least rainfall in Casper are January, August and September Rain falls for 7.5 days and accumulates 0.43" (11mm) of rain. January, August and September are months with the least rain in Casper when the rain falls for 7.5 days and typically aggregates up to 0.43" (11mm) of rain.
• Laramie - August »
  August's advent in Laramie presents an average high-temperature of a still moderately hot 75.7°F (24.3°C), indicating a slight variation from the conditions of the previous month. In Laramie, Wyoming, in August, during 13.3 rainfall days, 0.98" (25mm) of precipitation is typically accumulated.
• Gillette - August »
  In Gillette, Wyoming, in August, during 14.2 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. The heat of summer in Gillette continues its reign through August, although with slightly lower temperatures than July.
• Rock Springs - August »
  The months with the most sunshine in Rock Springs are July and August, with an average of 11.8h of sunshine. July and August, with an average relative humidity of 31%, are the least humid months in Rock Springs.
• Sheridan - August »
  In Sheridan during August, the rain falls for 17.3 days and regularly aggregates up to 1.81" (46mm) of precipitation. In Sheridan during August, the rain falls for 17.3 days and regularly aggregates up to 1.81" (46mm) of precipitation.
• Green River - August »
  In Green River during August, the rain falls for 7.5 days and regularly aggregates up to 0.55" (14mm) of precipitation. July and August, with an average relative humidity of 31%, are the least humid months in Green River.
• Evanston - August »
  The month with the least rainfall in Evanston is August, when the rain falls for 7.3 days and typically collects 0.51" (13mm) of precipitation. August is the least humid month in Evanston with an average relative humidity of 39%.
• Riverton - August »
  August in Riverton brings about slight reductions in temperature compared to July, but it still ranks among the warmer months of the year. Riverton observes an average high-temperature of a moderately hot 84.9°F (29.4°C) in August, barely different from 87.1°F (30.6°C) in July.
• Jackson - August »
  In Jackson during August, snow falls for 0.5 days and regularly aggregates up to 0.12" (3mm) of snow. August is the least humid month in Jackson with an average relative humidity of 50%.
• Cody - August »
  In Cody in August, it is raining for 8.8 days, with typically 0.67" (17mm) of accumulated precipitation. In Cody snow does not fall in July and August.
• Rawlins - August »
  The month with the least rainfall in Rawlins is August, when the rain falls for 6.6 days and typically collects 0.35" (9mm) of precipitation. The month with the least rainfall in Rawlins, Wyoming, is August, when the rain falls for 6.6 days and typically collects 0.35" (9mm) of precipitation.