Gillette
Wyoming, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Gillette, WY

January, like December, is another subzero cold winter month in Gillette, Wyoming, with average temperature varying between 30.4°F (-0.9°C) and 17.6°F (-8°C). In January, the average high-temperature is almost the same as in December - a still freezing cold 30.4°F (-0.9°C). Weather in January »

The last month of the winter, February, is another freezing cold month in Gillette, Wyoming, with average temperature fluctuating between 30.9°F (-0.6°C) and 16.7°F (-8.5°C). In Gillette, Wyoming, the average high-temperature in February is practically the same as in January - a still freezing cold 30.9°F (-0.6°C). Weather in February »

March, the first month of the spring, in Gillette, is a chilly month, with average temperature ranging between max 44.6°F (7°C) and min 28.9°F (-1.7°C). In March, the average high-temperature rises, from a subzero cold 30.9°F (-0.6°C) in February, to a chilly 44.6°F (7°C). Weather in March »

April in Gillette, Wyoming, is a cool spring month, with average temperature ranging between max 52.3°F (11.3°C) and min 34.3°F (1.3°C). In April, the average high-temperature slightly increases, from a chilly 44.6°F (7°C) in March, to a cool 52.3°F (11.3°C). Weather in April »

The last month of the spring, May, is a comfortable month in Gillette, Wyoming, with average temperature fluctuating between 43.3°F (6.3°C) and 62.2°F (16.8°C). In Gillette, the average high-temperature increases, from a cool 52.3°F (11.3°C) in April, to a comfortable 62.2°F (16.8°C). Weather in May »

The first month of the summer, June, is a warm month in Gillette, Wyoming, with average temperature fluctuating between 75.6°F (24.2°C) and 54.3°F (12.4°C). In Gillette, the average high-temperature increases, from a comfortable 62.2°F (16.8°C) in May, to a moderately hot 75.6°F (24.2°C). Weather in June »

July, the same as June, is another warm summer month in Gillette, Wyoming, with temperature in the range of an average low of 63.1°F (17.3°C) and an average high of 84.7°F (29.3°C). With an average high-temperature of 84.7°F (29.3°C) and an average low-temperature of 63.1°F (17.3°C), July is the warmest month. In July, the average heat index is calculated to 84.7°F (29.3°C). Weather in July »

The last month of the summer, August, is also a moderately hot month in Gillette, Wyoming, with average temperature varying between 82.4°F (28°C) and 62.4°F (16.9°C). In August, the average high-temperature is relatively the same as in July - a still moderately hot 82.4°F (28°C). Weather in August »

The first month of the autumn, September, is also a moderately hot month in Gillette, Wyoming, with average temperature ranging between min 54.3°F (12.4°C) and max 73.6°F (23.1°C). In September, the average high-temperature marginally drops, from a moderately hot 82.4°F (28°C) in August, to a still warm 73.6°F (23.1°C). Weather in September »

October, like September, in Gillette, Wyoming, is another fresh autumn month, with temperature in the range of an average high of 55.2°F (12.9°C) and an average low of 39.2°F (4°C). In Gillette, Wyoming, the average high-temperature significantly decreases, from a moderately hot 73.6°F (23.1°C) in September, to a fresh 55.2°F (12.9°C). Weather in October »

November, the last month of the autumn, in Gillette, is another chilly month, with average temperature ranging between max 42.8°F (6°C) and min 27.7°F (-2.4°C). In Gillette, the average high-temperature drops, from a cool 55.2°F (12.9°C) in October, to a frosty 42.8°F (6°C). Weather in November »

The first month of the winter, December, is still a freezing cold month in Gillette, Wyoming, with average temperature varying between 29.7°F (-1.3°C) and 17.2°F (-8.2°C). The coldest month is December, with an average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 17.2°F (-8.2°C). Weather in December »

What is the most humid month in Gillette?

With an average relative humidity of 78%, January is the most humid month.

How much does it rain in Gillette?

In Gillette, Wyoming, during the entire year, the rain falls for 108.9 days and collects up to 15.59" (396mm) of precipitation.

What is the driest month in Gillette?

January is the month with the least rainfall in Gillette. Rain falls for 2 days and accumulates 0.39" (10mm) of precipitation.

When does it snow in Gillette?

Months with snowfall are January through May, September through December.

How much does it snow in Gillette?

Throughout the year, there are 50.5 snowfall days, and 19.53" (496mm) of snow is accumulated.

What are the months with the lowest UV index in Gillette?

Months with the lowest UV index in Gillette are January, February, April, November and December, with an average maximum UV index of 2.

What is the month with the least sunshine in Gillette?

With an average of 5.6h of sunshine, February has the least sunshine of the year in Gillette.

What is the snowiest month in Gillette?

April is the month with the most snowfall. Snow falls for 7.1 days and accumulates 3.82" (97mm) of snow.

What is the wettest month in Gillette?

May is the month with the most rainfall in Gillette. Rain falls for 17.8 days and accumulates 3.11" (79mm) of precipitation.

When it does not snow in Gillette?

In Gillette snow does not fall in June through August.

When are the longest days in Gillette?

With an average of 15.5h of daylight, June has the longest days of the year.

When is the highest UV index in Gillette?

Months with the highest UV index are June through August, with an average maximum UV index of 6.

What is the warmest month in Gillette?

July is the warmest month in Gillette, Wyoming, with an average high-temperature of 84.7°F (29.3°C) and an average low-temperature of 63.1°F (17.3°C).

What are the months with the most sunshine in Gillette?

July and August, with an average of 11.8h of sunshine, are months with the most sunshine.

What is the least humid month in Gillette?

August is the least humid month in Gillette, with an average relative humidity of 41%.

What is the coldest month in Gillette?

With an average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 17.2°F (-8.2°C), December is the coldest month in Gillette.

What is the month with the shortest days in Gillette?

With an average of 8.9h of daylight, December has the shortest days of the year in Gillette.
Average temperature - Gillette, WY
Average rainfall - Gillette, WY

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the lowest rainfall) is January (0.39").

Average rainfall days - Gillette, WY

The month with the highest number of rainy days is May (17.8 days).
The month with the lowest number of rainy days is February (1.5 days).

Average snowfall - Gillette, WY
Average snowfall days - Gillette, WY

The month with the highest number of snowfall days is February (9.1 days).
Months with the lowest number of snowfall days are July and August (0 days).

Average daylight / Average sunshine - Gillette, WY

The month with the longest days is June (Average daylight: 15.5h).
The month with shortest days is December (Average daylight: 8.9h).

Months with most sunshine are July and August (Average sunshine: 11.8h).
The month with least sunshine is February (Average sunshine: 5.6h).

Average UV index - Gillette, WY