Climate and monthly weather forecastBasin, WY
Climate and monthly weather forecast
The climate of Basin
In the heart of Wyoming, USA, sits Basin - a location with a climate dominated by the Köppen classification BWk, a mid-latitude desert. Overall, the climate is characterized by significant temperature variation and relatively low precipitation throughout the year. While daytimes can feel quite warm, by striking contrast, nights often see a substantial drop in temperature.Looking closely at the climatological parameters, a systematic fluctuation becomes apparent. January and February tend to be the coldest months with high temperatures averaging from 29.7°F (-1.3°C) to 30.2°F (-1°C) and lows steeply falling between 13.8°F (-10.1°C) and 14.4°F (-9.8°C). The heat steadily increases to a peak in July with a summertime zenith of 85.1°F (29.5°C) and a night low of 63.3°F (17.4°C). Humidity ranges from a high of 78% in January to a low of 33% in July and August. The yearly swing in daylight hours oscillates from the winter low of 9.3 hours in January to the summer peak of 15.5 hours in June.
Precipitation in Basin is substantially modest with average rainfall failing to surpass 0.87" (22mm) in any month. Similarly, snowfall is not significant with values ranging from a high of 2.52" (64mm) in February to none from June to September. High incidence of sunshine and low cloud cover percentage underscore Basin's BWk desert climate status.
The best time to visit Basin
While the best time to visit Basin is not set in stone and largely depends on personal preferences, the popular choice leans towards late spring and early summer months. The heat, while present, isn’t overpowering, with May temperatures ranging from an agreeable 64.6°F (18.1°C) to a cool 47.1°F (8.4°C), where bursts of warmth are aided by 14.8 daylight hours. Rainfall remains well below one inch, at about 0.87" (22mm). For those eager to enjoy the best of Basin’s weather with ideal temperatures, considerable daylight and low rainfall, this period offers a pleasant opportunity.The worst time to visit Basin
Basin’s weather conditions in winter can be challenging for visitors. Extending from December through February, the temperatures drop from 28.8°F (-1.8°C) to 13.8°F (-10.1°C) in January, the coldest month. Expect snow in varying measures, hitting a height in February at 2.52" (64mm). Cold winds grip the town, averaging between 6mph (9.7km/h) and 7.1mph (11.4km/h), making it feel even colder. Substantial daylight is a casualty of the season with just 8.9 hours recorded in December. Winter is an arduous time and unless braving the cold is desirable, it may not be the optimal time for a visit.Spring weather in Basin
Spring brings a breath of fresh air in Basin. Temperatures climb from an inviting 54.1°F (12.3°C) in April to a comfortable 64.6°F (18.1°C) by May’s end. Although rainfall experiences a slight hike averaging 0.63" (16mm) in April, it still remains relatively low throughout the season, with 12 days in May having some measure of recognizable rainfall. A notable feature is the increasing daylight hours, surging from 13.5 hours in April to an illuminating 14.8 hours by May’s conclusion. The winds stay manageable, averaging 7.8mph (12.6km/h) to 8.3mph (13.4km/h), crafting the spring months into a delightful blend of pleasant temperatures and bountiful daylight.Summer weather in Basin
Summers in Basin embody the desert climate classification. From June through August, temperature highs are routinely above 76.5°F (24.7°C), peaking at an ardent 85.1°F (29.5°C) in July. Correspondingly, evening temperatures prevail in the comfortable range of 57°F (13.9°C) to 63.3°F (17.4°C). Rainfall is scanty, with an average of 0.67" (17mm) in June to 0.47" (12mm) in July and August. The frequency of rainfall, in line with BWK desert classification, falls to a yearly low at approximately seven days a month. Compounded with the long daylight hours, reaching the zenith in June at 15.5 hours, summers offer ample opportunity for outdoor pursuits.Autumn weather in Basin
Autumn ushers in mild, agreeable temperatures in Basin. In September, daytime temperatures hover around a comfortable 73.2°F (22.9°C), dipping to a cooler 53.8°F (12.1°C) at night. While the sunshine hours dwindling slightly to 12.5, they remain plentiful to convenience outdoor activities. Winds pick up pace, averaging 6.6mph (10.6km/h), and rainfall slowly inches up to 0.71" (18mm) but is spread out over 6.6 days on average, ensuring a predominantly dry autumn.Winter weather in Basin
Winter is marked by cold temperatures and a noticeable drop in daylight. December introduces the season with highs averaging 28.8°F (-1.8°C) and lows at a brutal 14.2°F (-9.9°C). The snowfall of 1.3" (33mm) in December and 1.85" (47mm) in January are telltale signs of the chilling winter. An average of 11.9mph (19.2km/h) gusts in December adds to the bite in the air. January pockets the least daylight of the year, averaging 9.3 hours. Despite the chilly conditions, it presents a unique perspective on this mid-latitude desert clime.Weather in January
With the year's coldest conditions, January in Basin, Wyoming, sees a significant drop in the mercury. With winter in full swing, expect to encounter harsh and potentially frigid conditions. Daylight is rather scarce, reducing outdoor activities due to limited visibility. Weather in January »Weather in February
In Basin, Wyoming, February signals the continuance of the winter season. This month sees a slight yet gradual increase in temperatures compared to its predecessor, January. An increase in daylight hours slightly alleviates the earlier scarcity of sunlight. Weather in February »Weather in March
March marks the transitional phase from winter to spring in Basin, Wyoming. Month-on-month, the temperature increases, and daylight hours grow. There's a noticeable reduction in snowfall, replaced by a steady increase in rainfall. The transformation in weather is evident as the landscape begins to thaw and revive. Weather in March »Weather in April
In April, the town of Basin, Wyoming, enters fully into springtime. The weather conditions are typically milder, with a considerable increase in temperature. There's an abundance of daylight and a corresponding decrease in the relative humidity level. Weather in April »Weather in May
May in Basin, Wyoming, presents warmer, more pleasant weather conditions. The transition from spring to summer begins, leading to noticeable elevations in temperature. Rainfall continues to outweigh snowfall, yielding a richer and greener landscape across the region. Weather in May »Weather in June
Arriving in Basin, Wyoming, the month of June brings the onset of summer. Temperatures continue their upward trend supported by ample sunshine and the longest daylight hours of the year. The likelihood of rainfall decreases, while the overall weather is conducive to various outdoor pursuits. Weather in June »Weather in July
July stands as Basin, Wyoming's hottest month of the year. Summers hit their peak, accompanied by a significant decline in relative humidity levels. Rainfall continues to be on the decline, while daylight hours, though slightly reduced from June, remain ample. Weather in July »Weather in August
August in Basin, Wyoming, signifies the tail-end of summer. Despite a slight drop in temperature from July, the weather remains hot and relatively dry. The city experiences a reduction in daylight hours while still encountering a fair amount of sunshine. Weather in August »Weather in September
September ushers in the fall season in Basin, Wyoming, with a discernible decline in temperature. As daylight hours diminish, a correlation with decreased sunshine hours is observed. Weather shifts towards cooler conditions, yet precipitation sees an uptick, with rainfall outpacing the previous month's rates. Weather in September »Weather in October
October sees a further deepening of autumn in Basin, Wyoming. While temperatures continue their downward trend, the remarkable decrease in daylight hours begins to limit outdoor activities. Rainfall maintains a steady pace, and snowfall begins to make its reappearance into the weather equation. Weather in October »Weather in November
November brings Basin, Wyoming towards the brink of winter. As temperatures persistently decrease, the occurrence of snowfall becomes more frequent. Daylight hours continue to dwindle, amplifying the arrival of colder months. Increased relative humidity becomes more apparent as the chill in the air continues to intensify. Weather in November »Weather in December
Wrapping up the year in Basin, Wyoming, December welcomes full-fledged winter conditions. The temperatures maintain their steady decline, resulting in a cold and snowy environment. Further reduction of daylight hours accentuates the winter feel while outdoor activities are left to the mercy of limited light. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Basin, WY
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is December (28.8°F).
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).
Average pressure
Basin, WY
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.15"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed
Basin, WY
- Average wind speed in January:
6mph - Average wind speed in February:
6.4mph - Average wind speed in March:
7.5mph - Average wind speed in April:
8.3mph - Average wind speed in May:
7.8mph - Average wind speed in June:
7.2mph
- Average wind speed in July:
6.4mph - Average wind speed in August:
6mph - Average wind speed in September:
6.6mph - Average wind speed in October:
7mph - Average wind speed in November:
6.8mph - Average wind speed in December:
6.5mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest months (with the lowest average wind speed) are January and August (6mph).
Average humidity
Basin, WY
The month with the highest relative humidity is January (78%).
The months with the lowest relative humidity are July and August (33%).
Average rainfall
Basin, WY
- Average rainfall in January:
0.28" - Average rainfall in February:
0.39" - Average rainfall in March:
0.31" - Average rainfall in April:
0.63" - Average rainfall in May:
0.87" - Average rainfall in June:
0.67"
- Average rainfall in July:
0.47" - Average rainfall in August:
0.47" - Average rainfall in September:
0.71" - Average rainfall in October:
0.43" - Average rainfall in November:
0.28" - Average rainfall in December:
0.2"
The wettest month (with the highest rainfall) is May (0.87").
The driest month (with the least rainfall) is December (0.2").
Average rainfall days
Basin, WY
- Average rainfall days in January:
7.9 days - Average rainfall days in February:
8.9 days - Average rainfall days in March:
9.3 days - Average rainfall days in April:
12 days - Average rainfall days in May:
12.6 days - Average rainfall days in June:
10 days
- Average rainfall days in July:
7.3 days - Average rainfall days in August:
7.8 days - Average rainfall days in September:
6.6 days - Average rainfall days in October:
7.4 days - Average rainfall days in November:
6.9 days - Average rainfall days in December:
6.5 days
The month with the highest number of rainy days is May (12.6 days).
The month with the least rainy days is December (6.5 days).
Average snowfall
Basin, WY
- Average snowfall in January:
1.85" - Average snowfall in February:
2.52" - Average snowfall in March:
0.67" - Average snowfall in April:
1.22" - Average snowfall in May:
0.28" - Average snowfall in June:
0"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Basin, WY
- Average snowfall days in January:
8.8 days - Average snowfall days in February:
9.8 days - Average snowfall days in March:
4.9 days - Average snowfall days in April:
3.1 days - Average snowfall days in May:
0.4 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.1 days - Average snowfall days in October:
1.6 days - Average snowfall days in November:
5.2 days - Average snowfall days in December:
7.5 days
The month with the highest number of snowfall days is February (9.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Basin, WY
- Average daylight in January:
9h and 18min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 48min - Average daylight in June:
15h and 30min
- Average daylight in July:
15h and 6min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 36min - Average daylight in December:
8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January:
6h and 42min - Average sunshine in February:
6h and 48min - Average sunshine in March:
9h and 18min - Average sunshine in April:
11h and 6min - Average sunshine in May:
11h and 24min - Average sunshine in June:
11h and 54min
- Average sunshine in July:
11h and 54min - Average sunshine in August:
11h and 54min - Average sunshine in September:
10h and 54min - Average sunshine in October:
7h and 18min - Average sunshine in November:
7h and 12min - Average sunshine in December:
7h and 0min
The months with the most sunshine are June, July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 42min).
Average sunshine days
Basin, WY
- Average sunshine days in January:
19.9 days - Average sunshine days in February:
15.4 days - Average sunshine days in March:
16.9 days - Average sunshine days in April:
12.5 days - Average sunshine days in May:
12.6 days - Average sunshine days in June:
12.5 days
- Average sunshine days in July:
15.9 days - Average sunshine days in August:
14.8 days - Average sunshine days in September:
18.5 days - Average sunshine days in October:
18.3 days - Average sunshine days in November:
18.8 days - Average sunshine days in December:
20.9 days
The month with the most sunshine days is December (20.9 days).
The months with the least sunshine days are April and June (12.5 days).
Average UV index
Basin, WY
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Basin, WY
The month with the most cloud cover is February (Cloud cover 28).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility
Basin, WY
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





