Weather forecast for 10 daysNewcastle, WY
Weather forecast for the weekend
Saturday Oct 17, 2026
- 70°F
- 39°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphSSE 165°
- Humidity: 27%
- UV index: 4
- Sunrise: 7:14 am MDT
- Sunset: 6:10 pm MDT
- details ▼
Today, open skies and radiant sunshine are expected.
A notable temperature range, reaching a high of an agreeable 69.8°F and a low of a wintry 39.2°F, is forecasted.
The predicted high will feel warmer, consistent with September's climate average of 68.5°F.
Sunrise was at 7:14 am and sunset will be at 6:10 pm; the daylight will last for 10h and 56min.
A notable temperature range, reaching a high of an agreeable 69.8°F and a low of a wintry 39.2°F, is forecasted.
The predicted high will feel warmer, consistent with September's climate average of 68.5°F.
Sunrise was at 7:14 am and sunset will be at 6:10 pm; the daylight will last for 10h and 56min.
Sunday Oct 18, 2026
- 68°F
- 36°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphSSE 159°
- Humidity: 33%
- UV index: 3
- Sunrise: 7:15 am MDT
- Sunset: 6:08 pm MDT
- details ▼
Tomorrow, on Sunday, October 18, sunny skies are also in store, with excellent visibility.
Significant variations in temperature are anticipated, peaking at a pleasant 68°F and dropping to a low of a wintry 35.6°F.
With a forecast of 68°F, conditions deviate from October's average and instead resemble September's climate trend.
Sunrise will be at 7:15 am and sunset at 6:08 pm; tomorrow's daylight will last for 10h and 53min.
Significant variations in temperature are anticipated, peaking at a pleasant 68°F and dropping to a low of a wintry 35.6°F.
With a forecast of 68°F, conditions deviate from October's average and instead resemble September's climate trend.
Sunrise will be at 7:15 am and sunset at 6:08 pm; tomorrow's daylight will last for 10h and 53min.
10-day overview
Daily temperatures
Maximum temperature: 70°C.
Coldest day: Saturday 24.10. 52°C.
Coldest day: Saturday 24.10. 52°C.
Chance of precipitation
Highest chance: Saturday 24.10. 48%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- 70°F
- 39°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphSSE 165°
- Humidity: 27%
- UV index: 4
- Sunrise: 7:14 am MDT
- Sunset: 6:10 pm MDT
- details ▼
- Sunday
- Oct 18, 2026
- 68°F
- 36°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphSSE 159°
- Humidity: 33%
- UV index: 3
- Sunrise: 7:15 am MDT
- Sunset: 6:08 pm MDT
- details ▼
- Monday
- Oct 19, 2026
- 64°F
- 43°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 12mphSSE 147°
- Humidity: 43%
- UV index: 3
- Sunrise: 7:16 am MDT
- Sunset: 6:06 pm MDT
- details ▼
- Tuesday
- Oct 20, 2026
- 70°F
- 43°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 6mphSSW 202°
- Humidity: 43%
- UV index: 3
- Sunrise: 7:17 am MDT
- Sunset: 6:05 pm MDT
- details ▼
- Wednesday
- Oct 21, 2026
- 68°F
- 48°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 8mphSSE 161°
- Humidity: 42%
- UV index: 3
- Sunrise: 7:19 am MDT
- Sunset: 6:03 pm MDT
- details ▼
- Thursday
- Oct 22, 2026
- 70°F
- 54°F
Partly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 11mphSSE 152°
- Humidity: 49%
- UV index: 3
- Sunrise: 7:20 am MDT
- Sunset: 6:02 pm MDT
- details ▼
- Friday
- Oct 23, 2026
- 70°F
- 41°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0.04"
- Wind: 11mphS 189°
- Humidity: 51%
- UV index: 3
- Sunrise: 7:21 am MDT
- Sunset: 6:00 pm MDT
- details ▼
- Saturday
- Oct 24, 2026
- 52°F
- 37°F
AM Showers
- Precip. probability: 48%
- Precipitation: 0.04"
- Wind: 13mphNNW 332°
- Humidity: 63%
- UV index: 2
- Sunrise: 7:22 am MDT
- Sunset: 5:58 pm MDT
- details ▼
- Sunday
- Oct 25, 2026
- 55°F
- 41°F
Partly Cloudy
- Precip. probability: 10%
- Precipitation: 0"
- Wind: 9mphSSE 152°
- Humidity: 57%
- UV index: 3
- Sunrise: 7:24 am MDT
- Sunset: 5:57 pm MDT
- details ▼
- Monday
- Oct 26, 2026
- 57°F
- 41°F
Partly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 9mphS 179°
- Humidity: 54%
- UV index: 3
- Sunrise: 7:25 am MDT
- Sunset: 5:55 pm MDT
- details ▼
Looking ahead, conditions suggest a period of bright, dull and rainy weather is anticipated.
With minimal precipitation of 0.04", rainfall is predicted for Friday and next Saturday.
There will be a considerable variation in temperature across the forecast period. The temperature is expected to swing from 51.8°F up to 69.8°F, while the variation in nighttime lows will be also notably wide, as the minimum temperature is expected to range between 35.6°F and 53.6°F.
Saturday, Tuesday, Thursday and Friday, with the highest temperature of 69.8°F, will be the warmest days in Newcastle, Wyoming; the coldest day will be next Saturday, with a maximum of 51.8°F.
With minimal precipitation of 0.04", rainfall is predicted for Friday and next Saturday.
There will be a considerable variation in temperature across the forecast period. The temperature is expected to swing from 51.8°F up to 69.8°F, while the variation in nighttime lows will be also notably wide, as the minimum temperature is expected to range between 35.6°F and 53.6°F.
Saturday, Tuesday, Thursday and Friday, with the highest temperature of 69.8°F, will be the warmest days in Newcastle, Wyoming; the coldest day will be next Saturday, with a maximum of 51.8°F.
Updated: Oct 17, 2026 @ 17:03:30 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Today, in Newcastle, a bright and mostly cloud-free sky is in store.
Today, the maximum temperature will be 69.8°F, while the minimum temperature will be 39.2°F.
The maximum temperature today will be uncommonly higher than the average highest temperature of 50°F in October. The lowest temperature will be relatively higher than the average low of 32.9°F.
The maximum temperature today will be uncommonly higher than the average highest temperature of 50°F in October. The lowest temperature will be relatively higher than the average low of 32.9°F.
On Saturday, in Newcastle, sunrise was at 7:14 am and sunset will be at 6:10 pm (MDT).
Today, the daylight will last for 10h and 56min.
On Sunday, skies are expected to be clear and full of sunshine.
Tomorrow, the highest temperature will be 68°F, while the lowest temperature will be 35.6°F.
The highest temperature will be significantly higher than the average maximum of 50°F in October. The lowest temperature tomorrow will be in line with the average low temperature.
The highest temperature will be significantly higher than the average maximum of 50°F in October. The lowest temperature tomorrow will be in line with the average low temperature.
On Sunday, in Newcastle, sunrise will be at 7:15 am and sunset at 6:08 pm (MDT).
Tomorrow, the daylight will last for 10h and 53min.





