Climate and monthly weather forecast
Newcastle, WY

Weather in January

January, like December, is another subzero cold winter month in Newcastle, Wyoming, with an average temperature fluctuating between 27.1°F (-2.7°C) and 12.2°F (-11°C). In January, the average high-temperature is almost the same as in December - a still freezing cold 27.1°F (-2.7°C). Weather in January »

Weather in February

February, the last month of the winter in Newcastle, is also a subzero cold month, with an average temperature varying between 26.8°F (-2.9°C) and 10.8°F (-11.8°C). In Newcastle, the average high-temperature in February is essentially the same as in January - a still subzero cold 26.8°F (-2.9°C). Weather in February »

Weather in March

The first month of the spring, March, is a cold month in Newcastle, Wyoming, with temperature in the range of an average high of 39.4°F (4.1°C) and an average low of 23°F (-5°C). In March, the average high-temperature rises from a subzero cold 26.8°F (-2.9°C) in February to a cold 39.4°F (4.1°C). Weather in March »

Weather in April

April is a chilly spring month in Newcastle, Wyoming, with an average temperature fluctuating between 29.5°F (-1.4°C) and 47.1°F (8.4°C). In Newcastle, the average high-temperature in April slightly increases from a wintry 39.4°F (4.1°C) in March to a chilly 47.1°F (8.4°C). Weather in April »

Weather in May

The last month of the spring, May, is a moderate month in Newcastle, Wyoming, with an average temperature fluctuating between 58.1°F (14.5°C) and 39.6°F (4.2°C). In Newcastle, the average high-temperature in May increases from a chilly 47.1°F (8.4°C) in April to a moderate 58.1°F (14.5°C). Weather in May »

Weather in June

June, the first month of the summer in Newcastle, is an agreeable month, with an average temperature varying between 50.7°F (10.4°C) and 70.9°F (21.6°C). In Newcastle, the average high-temperature in June increases from a moderate 58.1°F (14.5°C) in May to an agreeable 70.9°F (21.6°C). Weather in June »

Weather in July

July is a moderately hot summer month in Newcastle, Wyoming, with an average temperature ranging between max 79.2°F (26.2°C) and min 57.7°F (14.3°C). July is the warmest month, with an average high-temperature of 79.2°F (26.2°C) and an average low-temperature of 57.7°F (14.3°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Newcastle, Wyoming, with an average temperature fluctuating between 55.8°F (13.2°C) and 77.2°F (25.1°C). In August, the average high-temperature is relatively the same as in July - a still moderately hot 77.2°F (25.1°C). Weather in August »

Weather in September

September, the first month of the autumn in Newcastle, is also an agreeable month, with an average temperature varying between 48.2°F (9°C) and 68.5°F (20.3°C). In September, the average high-temperature marginally drops from a moderately hot 77.2°F (25.1°C) in August to an agreeable 68.5°F (20.3°C). Weather in September »

Weather in October

October, the same as September, is a cool autumn month in Newcastle, Wyoming, with an average temperature ranging between min 32.9°F (0.5°C) and max 50°F (10°C). In October, the average high-temperature declines considerably from an agreeable 68.5°F (20.3°C) in September to a fresh 50°F (10°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cold month in Newcastle, Wyoming, with an average temperature varying between 38.1°F (3.4°C) and 22.3°F (-5.4°C). In Newcastle, the average high-temperature in November drops from a fresh 50°F (10°C) in October to a wintry 38.1°F (3.4°C). Weather in November »

Weather in December

The first month of the winter, December, is also a subzero cold month in Newcastle, Wyoming, with an average temperature varying between 11.7°F (-11.3°C) and 26.2°F (-3.2°C). The coldest month is December, with an average high-temperature of 26.2°F (-3.2°C) and an average low-temperature of 11.7°F (-11.3°C). Weather in December »
[Resources]

FAQ

How much does it rain in Newcastle?

In Newcastle, Wyoming, during the entire year, the rain falls for 123.2 days and collects up to 19.37" (492mm) of precipitation.

When does it snow in Newcastle?

January through June, September through December are months with snowfall.

How much does it snow in Newcastle?

In Newcastle, during the entire year, snow falls for 80.3 days and aggregates up to 41.38" (1051mm) of snow.

What is the month with the lowest UV index in Newcastle?

The months with the lowest UV index in Newcastle are January through April, October through December, with an average maximum UV index of 2.

What is the most humid month in Newcastle?

The most humid month in Newcastle, Wyoming, is February, with an average relative humidity of 84%.

What is the month with the least sunshine in Newcastle?

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

When is Daylight Saving Time (DST) in Newcastle?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Newcastle, Wyoming, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from MDT to MST.

When does it snow the most in Newcastle?

April is the month with the most snowfall. Snow falls for 10.6 days and accumulates 8.82" (224mm) of snow.

What is the rainiest month in Newcastle?

The wettest months in Newcastle are June and July, with an average 2.68" (68mm) of rainfall.

When are the longest days in Newcastle?

With an average of 15h and 25min of daylight, June has the longest days of the year in Newcastle.

When is the highest UV index in Newcastle?

The months with the highest UV index are June through August, with an average maximum UV index of 5.

What is the warmest month in Newcastle?

July is the warmest month in Newcastle, Wyoming, with an average high-temperature of 79.2°F (26.2°C) and an average low-temperature of 57.7°F (14.3°C).

When it does not snow in Newcastle?

July and August are months without snowfall.

What is the least humid month in Newcastle?

The least humid month in Newcastle, Wyoming, is August, with an average relative humidity of 53%.

What month has the most sunshine in Newcastle?

The month with the most sunshine in Newcastle, Wyoming, is August, with an average of 11.8h of sunshine.

What is the coldest month in Newcastle?

With an average high-temperature of 26.2°F (-3.2°C) and an average low-temperature of 11.7°F (-11.3°C), December is the coldest month.

What is the driest month in Newcastle?

December is the month with the least rainfall. Rain falls for 4.3 days and accumulates 0.67" (17mm) of precipitation.

What is the month with the shortest days in Newcastle?

With an average of 8h and 58min of daylight, December has the shortest days of the year.

Average temperature
Newcastle, WY

Average temperature - Newcastle, WY

The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is December (26.2°F).

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is February (10.8°F).

[Resources]

Average pressure
Newcastle, WY

Average pressure - Newcastle, WY

The months with the highest atmospheric pressure are January and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

[Resources]

Average wind speed
Newcastle, WY

Average wind speed - Newcastle, WY

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).

[Resources]

Average rainfall
Newcastle, WY

Average rainfall - Newcastle, WY

The wettest months (with the highest rainfall) are June and July (2.68").
The driest month (with the least rainfall) is December (0.67").

[Resources]

Average rainfall days
Newcastle, WY

Average rainfall days - Newcastle, WY

The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (3.7 days).

[Resources]

Average snowfall
Newcastle, WY

Average snowfall - Newcastle, WY

The month with the highest snowfall is April (8.82").
The months with the least snowfall are July and August (0").

[Resources]

Average snowfall days
Newcastle, WY

Average snowfall days - Newcastle, WY

The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are July and August (0 days).

[Resources]

Average daylight / Average sunshine
Newcastle, WY

Average daylight / Average sunshine - Newcastle, WY

The month with the longest days is June (Average daylight: 15h and 25min).
The month with the shortest days is December (Average daylight: 8h and 58min).

The month with the most sunshine is August (Average sunshine: 11.8h).
The month with the least sunshine is February (Average sunshine: 5.6h).

[Resources]

Average sunshine days
Newcastle, WY

Average sunshine days - Newcastle, WY

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (9.7 days).

[Resources]

Average UV index
Newcastle, WY

Average UV index - Newcastle, WY

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

[Resources]

Average visibility
Newcastle, WY

Average visibility - Newcastle, WY

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location