What kind of weather does wyoming have




















Winter is another high point in Wyoming as ski resorts like Jackson Hole cater to big numbers of ski tourists and even Yellowstone stays busy with snowmobilers. There are still good deals to be found, especially outside the Christmas weeks. For guaranteed low room rates, simply plan a trip in April or May. South Carolina. South America. World Wonders. Luxury Travel. The Great Outdoors. However, blowing snow can severly reduce visibility.

This record, however, is under review as the observations recorded for the Riverside station very likely were made just across the border in Montana in To illustrate winter temperature extremes, figure 3.

By definition, in this study an extreme temperature that equals or exceeds two standard deviations based on the 55 winter average daily maximum and minimum temperatures was used. Linear trend lines show that winter extreme cold days have been diminishing from just over 4.

The individual winter rankings from most warm and cold extreme number of days to least is shown in Table 3. While the average number of extreme maxima seasonal events varied from 2. In Table 3. This exception can be explained in part since during the first winter of the study, there were 21 days of extreme cold. If there were about half that number, the trend would be Thus caution should always be used when reviewing trends since the start and end points can cause exaggerated and skewed results.

The maximum number of days of extreme temperatures during the 55 winter seasons is listed by season if two or fewer seasons had the same maximum number of days. Table 3. During warm spells in the winter, nighttime temperatures frequently remain above freezing.

Chinooks, warm downslope winds, are common along the eastern slopes. Numerous valleys provide ideal pockets for the collection of cold air drainage at night. It is common to have temperatures in the valleys considerably lower than on the nearby mountainside.

Big Piney, in the Green River Valley, is such a location. Mean January temperatures in the Bighorn Basin show the variation between the lower and upper parts of the valley. Discussion about temperature records is always of interest to the general public or special interest groups.

Many a bet has been waged during coffee breaks and many are surprised by the answers. Figure 3. In Figure 3. Days with freezing temperatures or colder exceed days in the mountains but only about half that amount over portions of the eastern plains and central river basins. Heat Stress Index is defined as the combination of high temperature and humidity that humans can physically tolerate.

In the US, extreme heat may have a greater impact on human health Kalkstein and Davis, , especially among the elderly Changnon et al. The combined effects of temperature and humidity cannot be directly measured but can be assessed by a calculation of an "apparent temperature" A. The apparent temperature of "how hot it feels" should not be confused with the Heat Index 17 Figure 3.

To include values below these limits would be a misuse of the Heat Index, but rejecting those conditions would introduce bias. Therefore employment of the Steadman apparent temperature is used. The 85th percentile values have been shown to be closely correlated with weather-related mortality statistics Kalkstein and Davis, These conditions are exceeded on average about a dozen days during July and August.

The lowlands accumulate less snow, but many of them register approximately 50" mm during the winter. Winter days are often below freezing point in many parts of Wyoming, and the night's witness even colder temperatures - the season is slow regarding tourist numbers.

However, off-season discounts and winter activities attract some visitors. Wyoming is prone to wildfires, thunderstorms, and tornadoes in late spring and early summer. Hot and dry conditions usually exist at the peak during the summer, which increases the frequency and intensity of wildfires. The lodgepole and ponderosa forests are particularly susceptible to wildfires in dry conditions.

Southeastern plains of Wyoming have more thunderstorm days than other parts of the state. The southeastern corner of the state shows increased precedence of tornadoes, which decreases going further westward - in general, the intensity of these storms is smaller compared to some of the other parts of the country. Winds are regularly in the 30 to 40mph Chinook winds help to resist the drop in temperatures and corresponding snow accumulation. Beware, January is the snowiest month of the year, particularly in the higher ranges of the mountains where it can easily cross 50" mm.

February is a chilly winter month in Wyoming with the state in the firm grip of the freezing weather. Nights are bitterly cold, while an average of 15 days sees a fair amount of sunshine. Snowfall is 10" mm to 15" mm in many places, with a general decrease in the amount of snow towards the south and east.

Blizzards are likely in many places that dump vast amounts of snow, but the sparse population and the small number of cities in Wyoming mean that the effect is not as pronounced as that in the American northeast. Overall, February is an avoidable month to visit Wyoming with better weather in the other periods of the year.

March is a cold month even though it starts the spring season in Wyoming. The Big Horn Basin, especially its lowest parts as well as the lower elevations of the northeast and eastern parts of the state, are warmer compared to the rest of the state. March seldom registers more than 1" March seems more like the tail of winter than the arrival of spring, with the sun still not making a regular presence on the horizon. By the end of March, tourists can also experience the start of the growing season in many places in Wyoming.

Within 10 miles contains only modest variations in elevation feet. Within 50 miles contains very significant variations in elevation 5, feet. This report illustrates the typical weather in Cheyenne, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, to December 31, There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Cheyenne.

For each station, the records are corrected for the elevation difference between that station and Cheyenne according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Cheyenne is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Cheyenne and a given station. To get a sense of how much these sources agree with each other, you can view a comparison of Cheyenne and the stations that contribute to our estimates of its temperature history and climate.

Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data. All data relating to the Sun's position e. This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a kilometer grid.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database. Time zones for airports and weather stations are provided by AskGeo. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series.

While having the tremendous advantages of temporal and spatial completeness, these reconstructions: 1 are based on computer models that may have model-based errors, 2 are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and 3 have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page. You're permitted to use this graph as long as you provide prominent attribution with a link back close to the use of the graph. For print usage, please acquire a license. Full Year. Spring Summer Fall Winter.

Climate in Cheyenne Link. History: Cheyenne weather by month. Click on each chart for more information. The daily average high red line and low blue line temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures. Average Hourly Temperature in Cheyenne Link. The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Compare Cheyenne to another city:. Cloud Cover Categories in Cheyenne Link.



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