Skip to main content

Newcastle city, Wyoming

Official LSAD Designation: Newcastle city • Census GEOID: 5656215 • Weston County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Newcastle city.

Reference Weather Station: NEWCASTLE, WY US (ID: USC00486660) • Located 0.4 miles from community center • Elevation: 1,345.7 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 34.6° 14.2° 24.4° 0.51"
February 37.6° 16.2° 26.9° 0.67"
March 48.3° 25.5° 36.9° 0.77"
April 57.0° 33.3° 45.2° 1.70"
May 66.3° 43.3° 54.8° 2.90"
June 77.6° 53.0° 65.3° 2.68"
July 86.6° 60.2° 73.4° 2.54"
August 85.6° 58.5° 72.1° 1.82"
September 75.1° 49.0° 62.0° 1.20"
October 58.9° 35.5° 47.2° 1.24"
November 45.0° 24.2° 34.6° 0.59"
December 34.6° 15.0° 24.8° 0.54"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station NEWCASTLE, WY US (ID: USC00486660) • 0.4 miles from community center .

This is the same reference station used for monthly normals.

Annual mean Annual mean of daily highs Annual mean of daily lows
Annual temperature history at NEWCASTLE, WY US Year is the horizontal axis. Annual mean temperature in degrees Fahrenheit is the vertical axis. Dots show recorded years; lines connect consecutive available years only. Missing years are gaps, with no interpolation. Optional dashed lines show annual mean of daily highs and lows. Exact values appear in the data table below. 30.0 39.0 48.0 57.0 66.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2012: Annual mean 50.7°F 2015: Annual mean 48.3°F 2017: Annual mean 47.8°F 2019: Annual mean 44.6°F 2021: Annual mean 48.3°F 2022: Annual mean 46.7°F 2023: Annual mean 48.0°F 2024: Annual mean 50.2°F 2025: Annual mean 48.0°F 2012: Annual mean of daily highs 63.1°F 2015: Annual mean of daily highs 59.7°F 2017: Annual mean of daily highs 59.5°F 2019: Annual mean of daily highs 55.4°F 2021: Annual mean of daily highs 60.9°F 2022: Annual mean of daily highs 59.3°F 2023: Annual mean of daily highs 59.7°F 2024: Annual mean of daily highs 62.9°F 2025: Annual mean of daily highs 60.5°F 2012: Annual mean of daily lows 38.4°F 2015: Annual mean of daily lows 37.0°F 2017: Annual mean of daily lows 36.0°F 2019: Annual mean of daily lows 33.8°F 2021: Annual mean of daily lows 35.8°F 2022: Annual mean of daily lows 34.1°F 2023: Annual mean of daily lows 36.4°F 2024: Annual mean of daily lows 37.4°F 2025: Annual mean of daily lows 35.6°F

Source: NOAA NCEI Global Summary of the Year.

Annual temperature data table (°F)
Annual station temperatures, 2010–2025. Unavailable means no reported value.
Year Annual mean (°F) Annual mean of daily highs (°F) Annual mean of daily lows (°F)
2010 Unavailable Unavailable Unavailable
2011 Unavailable Unavailable Unavailable
2012 50.7 63.1 38.4
2013 Unavailable Unavailable Unavailable
2014 Unavailable Unavailable Unavailable
2015 48.3 59.7 37.0
2016 Unavailable Unavailable Unavailable
2017 47.8 59.5 36.0
2018 Unavailable Unavailable Unavailable
2019 44.6 55.4 33.8
2020 Unavailable Unavailable Unavailable
2021 48.3 60.9 35.8
2022 46.7 59.3 34.1
2023 48.0 59.7 36.4
2024 50.2 62.9 37.4
2025 48.0 60.5 35.6
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.