Utah Weather Records
The official all-time extremes for Utah, as NOAA’s State Climate Extremes Committee lists them: from 117°F at St. George to -50°F at Strawberry Tunnel (East).
Maximum Temperature
| Record | Date | Where | Station | Status |
|---|---|---|---|---|
| 117°F | July 10, 2021 | St. George | 427516 | ESA |
| 117°F | July 5, 1985 | St. George | 427516 | EA |
A 118 degrees F temperature was observed on July 4, 2007 at a Remote Automatic Weather Station (RAWS) located near the Utah Welcome Center on I-15 south of St. George. However, a decision on the validity of this value could not be determined by the State Climate Extremes Committee. View 2021 Record Report A 118 degrees F temperature was observed on July 4, 2007 at a Remote Automatic Weather Station (RAWS) located near the Utah Welcome Center on I-15 south of St. George. However, a decision on the validity of this value could not be determined by the State Climate Extremes Committee. View 2021 Record Report
Minimum Temperature
| Record | Date | Where | Station | Status |
|---|---|---|---|---|
| -50°F | January 5, 1913 | Strawberry Tunnel (East) | 422319 | NA |
The previously reported record of -69 degrees F set at Peters Sinks on Feb 1, 1985 is widely considered an accurate observation, but no information concerning the observation or the station could be identified, and the value is heavily affected by the local terrain. The -50 degrees F at Strawberry Tunnel is the coldest temperature observation that can be verified from publicly available observations at established observation stations in Utah.
Greatest 24-Hour Precipitation
| Record | Date | Where | Station | Status |
|---|---|---|---|---|
| 5.08 inches | February 1, 1963 | Deer Creek Dam | 422057 | NA |
A value of 8.40 inches was reported as part of a post-flash flood survey conducted by the National Weather Service at North Odgen on September 7-8, 1991.
Maximum 24-Hour Snowfall
| Record | Date | Where | Station | Status |
|---|---|---|---|---|
| 38 inches | December 2, 1982 | Alta | 420072 | NA |
55.5 inches of snow fall in 24 hours was reported at the Alta Guard Station in Alta, UT on January 5-6, 1991, but information concerning this observation or the station is unavailable and cannot be considered official.
Maximum Snow Depth
| Record | Date | Where | Station | Status |
|---|---|---|---|---|
| 179 inches | April 7, 1958 | Alta | 420072 | N1A |
| 179 inches | April 5, 1958 | Alta | 420072 | N1A |
236 inches of snow depth were observed at the Collins snow study observation site at Alta, UT on May 19, 1983, but information concerning this observation or the station is unavailable and cannot be considered official. 236 inches of snow depth were observed at the Collins snow study observation site at Alta, UT on May 19, 1983, but information concerning this observation or the station is unavailable and cannot be considered official.
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Sources
NOAA National Centers for Environmental Information, State Climate Extremes Committee records.