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Contents
- The climate of Newcastle
- The best time to visit Newcastle
- The worst time to visit Newcastle
- Spring weather in Newcastle
- Summer weather in Newcastle
- Autumn weather in Newcastle
- Winter weather in Newcastle
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Newcastle
Nestled in the state of Wyoming, Newcastle occupies a locale that experiences a distinct mid-latitude steppe climate, classified under the Köppen climate categorization as BSk. Over the course of a year, the weather in this region displays notable shifts in temperature, with January being the coldest, averaging 12.2°F (-11°C), and July being the warmest, averaging 79.2°F (26.2°C). The degree of rainfall varies throughout the year, with the highest rainfall noted in June, amounting to 2.68" (68mm). During this month, the city also experiences a high level of humidity at 62%.
Taking a closer look at these patterns, it becomes evident that Newcastle experiences significant annual differences in both temperature and precipitation. Monthly high temperatures range from 26.2°F (-3.2°C) in December to 79.2°F (26.2°C) in July, demonstrating the considerable seasonal temperature fluctuation. Rainfall also follows this pattern, with the amount of rainfall gauged at 0.67" (17mm) in December and extending to 2.68" (68mm) in June.
Newcastle displays a unique pattern in its relative humidity throughout the year, with the highest levels recorded during winter months, reaching a peak of 84% in February and the lowest in July, settling at 55%.
Taking a closer look at these patterns, it becomes evident that Newcastle experiences significant annual differences in both temperature and precipitation. Monthly high temperatures range from 26.2°F (-3.2°C) in December to 79.2°F (26.2°C) in July, demonstrating the considerable seasonal temperature fluctuation. Rainfall also follows this pattern, with the amount of rainfall gauged at 0.67" (17mm) in December and extending to 2.68" (68mm) in June.
Newcastle displays a unique pattern in its relative humidity throughout the year, with the highest levels recorded during winter months, reaching a peak of 84% in February and the lowest in July, settling at 55%.
The best time to visit Newcastle
Given the variety in climatic conditions, the most suitable time to visit Newcastle depends greatly on the activities and weather preferences of each visitor. For those favoring warm temperatures, the best time to visit would be from June to August, when average high temperatures range between 70.9°F (21.6°C) and 79.2°F (26.2°C). During these months, the daylight hours extend longest, nearly reaching 15.1 hours in July. Additionally, these months bring about the most sunshine hours, peaking at 11.7 hours in July.
The worst time to visit Newcastle
For travelers, the most challenging period to visit Newcastle would likely be during winter months, specifically November to February. During this time, this region experiences low temperatures that average between 10.8°F (-11.8°C) to 22.3°F (-5.4°C), coupled with a high percentage of cloud cover, reaching a peak of 43% in February. To further compound these dreary conditions, these months also have the fewest daylight hours, dropping to a mere 9 hours in December.
Spring weather in Newcastle
March to May identifies as the spring season in Newcastle. During this period, the city witnesses a gradual rise in temperatures, commencing from average lows of around 23°F (-5°C) in March climbing to comfortable highs of 58.1°F (14.5°C) in May. Rainfall during this season is also noteworthy, increasing from 1.22" (31mm) in March to a peak of 2.56" (65mm) in May.
Summer weather in Newcastle
The arrival of June marks the commencement of the summer season in Newcastle. This period, extending up to August, brings about the highest temperatures in the region, with an average high peaking at 79.2°F (26.2°C) in July. However, it's also the season that sees the highest rainfall, which corresponds to increased humidity levels, peaking at 62% in June.
Autumn weather in Newcastle
Autumn descends upon Newcastle from September through November. During this period, the city experiences a gradual decrease in temperature, which falls from average highs of 68.5°F (20.3°C) in September to mild temperatures of 38.1°F (3.4°C) in November. Rainfall during this season declines slowly, from 1.26" (32mm) in September to a lower level of 0.71" (18mm) in November.
Winter weather in Newcastle
The winter season in Newcastle starts in December and ends in February. During this period, the city experiences its coldest weather, with temperatures ranging from an average low of 11.7°F (-11.3°C) in February to an average high of just 27.1°F (-2.7°C) in December. It also sees the highest levels of snowfall, with a peak of 8.82" (224mm) recorded in December. Additionally, the length of daylight hours during winter is the shortest, lasting for 9 hours in December and February.
Weather in January
Moving from the frosty December, January in Newcastle, Wyoming continues the winter chill. Winter coats remain a necessity, with the mercury dropping to a bone-chilling 12.2°F (-11°C). The city hunkers down under an overcast sky, shrouding it in an atmospheric cloak of winter. Weather in January »
Weather in February
As February arrives, so does an incremental rise in temperature, though not significantly warmer than the previous month. The greatest snowfall depth is observed during this period, when the city is blanketed under 4.61" (117mm) of snow. Weather in February »
Weather in March
Beginning the transition from winter to spring, March brings a perceptible but moderate rise in temperature. There is a sharp increase in the rainfall rate, with the month receiving 1.22" (31mm) of rain, however, the snowfall also remains abundant. Weather in March »
Weather in April
April in Newcastle breathes life back into the landscape as spring truly settles. Those wary of the winter's cold can start venturing outdoors as temperatures trend upwards. A notable meteorological event in April is the peak rainfall of the year, with a downpour of 2.09" (53mm). Weather in April »
Weather in May
May, the bridge between spring and summer, brings milder temperatures to Newcastle. Stringent weather patterns of winter now a fleeting memory, replaced by significant daylight hours offering plenty of opportunity to enjoy the outdoors. Weather in May »
Weather in June
June marks the beginning of summer and Newcastle welcomes higher temperatures and extended daylight hours, invoking lively energy across the city. Humidity falls, making the weather relatively comfortable despite the temperature rise. Weather in June »
Weather in July
Extra sunscreen is a must for July as temperatures reach their zenith. Although an average high of 79.2°F (26.2°C) is recorded this month, the adventures of summer continue given the relatively low humidity. It's noteworthy that July displays the least number of cloudy days, gracing Newcastle with a plethora of sunshine. Weather in July »
Weather in August
August sees a slight dip in temperature yet still cloaks Newcastle in warm, comfortable summer heat. In spite of fewer daylight hours, the city enjoys extended sunshine durations. In contrast to July, the city receives an increment of rainfall measuring 2.6" (66mm). Weather in August »
Weather in September
The arrival of September signals the transition from summer to autumn in Newcastle. While noticeably cooler compared to August, September remains pleasant and offers many sunbathing opportunities. September marks the return of the snowfall, albeit a scanty 0.59" (15mm). Weather in September »
Weather in October
October sees a further drop in temperatures as autumn becomes established in Newcastle. Enveloped in autumnal hues, the city gracefully makes room for colder weather and frosty mornings. October experiences heightened wind speeds of up to 10.5mph (16.9km/h). Weather in October »
Weather in November
November witnesses Newcastle's climate become more frigid as temperatures fall noticeably. The drop in mercury coincides with a jump in the frequency of snowfall, registering a 4.29" (109mm) supply of snow, a distinct marker of the door opening to winter. Weather in November »
Weather in December
The year rounds off with December reintroducing the winter chill heavy enough to paint windows with frosty designs in Newcastle. Despite the cold, the city maintains a festive spirit, preparing to bid farewell to the year. Snowfall peaks in December, providing 3.98" (101mm) of fresh snow perfect for winter sports and snowmen. Weather in December »
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How much does it rain in Newcastle?
Throughout the year, there are 123.2 rainfall days, and 19.37" (492mm) of precipitation is accumulated.
When does it snow?
Months with snowfall in Newcastle are January through June, September through December.
How much does it snow in Newcastle?
Throughout the year, there are 80.3 snowfall days, and 41.38" (1051mm) of snow is accumulated.
What is the month with the lowest UV index in Newcastle?
The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2.
What is the most humid month?
February is the most humid month, with an average relative humidity of 84%.
What is the month with the least sunshine?
With an average of 5.6h of sunshine, February has the least sunshine of the year.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.
What is the snowiest month?
The month with the most snowfall is April, when snow falls for 10.6 days and typically aggregates up to 8.82" (224mm) of snow.
What is the rainiest month?
The wettest months are June and July, with an average 2.68" (68mm) of rainfall.
When are the longest days in Newcastle?
June has the longest days of the year, with an average of 15h and 24min of daylight.
When is the highest UV index?
June through August, with an average maximum UV index of 5, are months with the highest UV index.
What time of the year is the hottest?
In Newcastle, temperatures reach their average annual highs in July, measuring 79.2°F (26.2°C) and a minimum average of 57.7°F (14.3°C).
When it does not snow in Newcastle?
In Newcastle, snow does not fall in July and August.
What is the least humid month?
August is the least humid month, with an average relative humidity of 53%.
What month has the most sunshine?
The month with the most sunshine is August, with an average of 11.8h of sunshine.
What month is the coldest?
December is the coldest month of the year, registering average temperatures as high as 26.2°F (-3.2°C) and as low as 11.7°F (-11.3°C).
What is the driest month?
The month with the least rainfall in Newcastle is December, when the rain falls for 4.3 days and typically collects 0.67" (17mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 0min of daylight.
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).
Average pressure
Newcastle, WY
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
29.99"Hg - Average pressure in April:
29.92"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.84"Hg
- Average pressure in July:
29.89"Hg - Average pressure in August:
29.89"Hg - Average pressure in September:
29.93"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.05"Hg - Average pressure in December:
30.13"Hg
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).
Average wind speed
Newcastle, WY
- Average wind speed in January:
8.7mph - Average wind speed in February:
8.5mph - Average wind speed in March:
9.1mph - Average wind speed in April:
10.3mph - Average wind speed in May:
9.6mph - Average wind speed in June:
9.1mph
- Average wind speed in July:
8.1mph - Average wind speed in August:
7.8mph - Average wind speed in September:
8.7mph - Average wind speed in October:
9.6mph - Average wind speed in November:
8.7mph - Average wind speed in December:
8.3mph
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).
Average humidity
Newcastle, WY
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (53%).
Average rainfall
Newcastle, WY
- Average rainfall in January:
0.75" - Average rainfall in February:
0.71" - Average rainfall in March:
1.22" - Average rainfall in April:
2.09" - Average rainfall in May:
2.56" - Average rainfall in June:
2.68"
- Average rainfall in July:
2.68" - Average rainfall in August:
2.6" - Average rainfall in September:
1.26" - Average rainfall in October:
1.46" - Average rainfall in November:
0.71" - Average rainfall in December:
0.67"
The wettest months (with the highest rainfall) are June and July (2.68").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days
Newcastle, WY
- Average rainfall days in January:
4.3 days - Average rainfall days in February:
3.7 days - Average rainfall days in March:
7.6 days - Average rainfall days in April:
12.7 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
17.9 days
- Average rainfall days in July:
16.9 days - Average rainfall days in August:
16.5 days - Average rainfall days in September:
10 days - Average rainfall days in October:
8.1 days - Average rainfall days in November:
4.1 days - Average rainfall days in December:
4.3 days
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).
Average snowfall
Newcastle, WY
- Average snowfall in January:
4.33" - Average snowfall in February:
4.61" - Average snowfall in March:
5.91" - Average snowfall in April:
8.82" - Average snowfall in May:
3.86" - Average snowfall in June:
0.12"
The month with the highest snowfall is April (8.82").
The months with the least snowfall are July and August (0").
Average snowfall days
Newcastle, WY
- Average snowfall days in January:
12.8 days - Average snowfall days in February:
12.4 days - Average snowfall days in March:
10.3 days - Average snowfall days in April:
10.6 days - Average snowfall days in May:
4 days - Average snowfall days in June:
0.1 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.8 days - Average snowfall days in October:
8.3 days - Average snowfall days in November:
9.3 days - Average snowfall days in December:
11.7 days
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).
Average daylight / Average sunshine
Newcastle, WY
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 3min - Average daylight in May:
14h and 5min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 1min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January:
5h and 5min - Average sunshine in February:
5h and 4min - Average sunshine in March:
7h and 4min - Average sunshine in April:
9h and 1min - Average sunshine in May:
10h and 1min - Average sunshine in June:
11h and 2min
- Average sunshine in July:
11h and 4min - Average sunshine in August:
11h and 5min - Average sunshine in September:
10h and 4min - Average sunshine in October:
6h and 5min - Average sunshine in November:
6h and 2min - Average sunshine in December:
5h and 5min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days
Newcastle, WY
- Average sunshine days in January:
16.7 days - Average sunshine days in February:
14.8 days - Average sunshine days in March:
16.2 days - Average sunshine days in April:
10.6 days - Average sunshine days in May:
10.8 days - Average sunshine days in June:
9.7 days
- Average sunshine days in July:
10.3 days - Average sunshine days in August:
10 days - Average sunshine days in September:
15.4 days - Average sunshine days in October:
16.1 days - Average sunshine days in November:
18.7 days - Average sunshine days in December:
17.9 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (9.7 days).
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).
Average cloud cover
Newcastle, WY
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 17).
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).
Newcastle, Wyoming, USA
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