Thermopolis Weather in April
Average highs run from 59°F on April 1 to 66°F on April 30, and lows from 30°F to 37°F. Normal precipitation for the month is 1.63 in over about 7 wet days.
April day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
April at a glance
- Average high
- 62°F
- Average low
- 33°F
- Precipitation
- 1.63 in
- Snowfall
- 2.2 in
- Record high
- 89°FApr 27, 1910
- Record low
- -6°FApr 3, 1936
- Chance of a freeze
- 100%
- Daylight
- 12 h 46 min to 14 h 08 min
- Cloud cover
- 66%
- Humidity
- 55%
- Dew point
- 26°F
- Wind
- 8.9 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Apr 1 | 59°F | 30°F | 76°F 2004 | 2°F 1908 | 17% | 5% |
| Apr 2 | 59°F | 31°F | 75°F 2011 | 7°F 1935 | 17% | 5% |
| Apr 3 | 60°F | 31°F | 77°F 1961 | -6°F 1936 | 17% | 5% |
| Apr 4 | 60°F | 31°F | 80°F 2000 | 8°F 1936 | 17% | 4% |
| Apr 5 | 60°F | 31°F | 79°F 1991 | -6°F 1936 | 18% | 4% |
| Apr 6 | 60°F | 31°F | 79°F 1959 | 8°F 1939 | 18% | 4% |
| Apr 7 | 60°F | 32°F | 80°F 1960 | 10°F 1929 | 18% | 4% |
| Apr 8 | 60°F | 32°F | 76°F 1910 | 6°F 1928 | 19% | 4% |
| Apr 9 | 61°F | 32°F | 79°F 1996 | 10°F 1928 | 19% | 4% |
| Apr 10 | 61°F | 32°F | 79°F 1996 | 6°F 2013 | 19% | 4% |
| Apr 11 | 61°F | 32°F | 82°F 2012 | 9°F 1935 | 20% | 4% |
| Apr 12 | 61°F | 33°F | 83°F 1908 | 10°F 1997 | 20% | 4% |
| Apr 13 | 61°F | 33°F | 84°F 1908 | 5°F 2022 | 20% | 4% |
| Apr 14 | 61°F | 33°F | 84°F 1962 | 8°F 2022 | 21% | 3% |
| Apr 15 | 62°F | 33°F | 83°F 1962 | 13°F 1951 | 21% | 3% |
| Apr 16 | 62°F | 33°F | 81°F 1937 | 10°F 1917 | 21% | 3% |
| Apr 17 | 62°F | 34°F | 82°F 1936 | 15°F 1963 | 22% | 3% |
| Apr 18 | 62°F | 34°F | 81°F 1936 | 15°F 2013 | 22% | 3% |
| Apr 19 | 62°F | 34°F | 85°F 1962 | 16°F 1953 | 22% | 3% |
| Apr 20 | 63°F | 34°F | 85°F 1910 | 12°F 2021 | 22% | 3% |
| Apr 21 | 63°F | 35°F | 86°F 2026 | 15°F 1931 | 23% | 2% |
| Apr 22 | 63°F | 35°F | 84°F 1994 | 11°F 1951 | 23% | 2% |
| Apr 23 | 63°F | 35°F | 87°F 2012 | 7°F 2013 | 23% | 2% |
| Apr 24 | 64°F | 35°F | 88°F 2012 | 21°F 1913 | 23% | 2% |
| Apr 25 | 64°F | 36°F | 84°F 1910 | 17°F 2008 | 24% | 2% |
| Apr 26 | 64°F | 36°F | 86°F 1910 | 21°F 1958 | 24% | 2% |
| Apr 27 | 65°F | 36°F | 89°F 1910 | 20°F 1903 | 24% | 2% |
| Apr 28 | 65°F | 36°F | 87°F 1910 | 20°F 1908 | 24% | 1% |
| Apr 29 | 65°F | 37°F | 89°F 1939 | 18°F 1903 | 24% | 1% |
| Apr 30 | 66°F | 37°F | 85°F 1992 | 15°F 1909 | 24% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- April 1
- sunrise 6:54 AM, sunset 7:40 PM
- April 30
- sunrise 6:06 AM, sunset 8:14 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00488875 (Thermopolis), public domain. Records: NOAA GHCN-Daily, station USC00488875, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.