City Creek Water Treatment Plant, Utah climate: Climate normals at a NOAA weather station
City Creek Water Treatment Plant's normal year runs from 20°F January nights to 89°F July afternoons, with 26.7 inches of precipitation and 114 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 9.6°C, January lows of −7°C, July highs of 32°C, 679 mm of precipitation a year.
- NOAA stationCity Creek Water Treatment Plant
- Station IDUSC00421446
- Location40.81°N 111.83°W
- Elevation5,340 ft (1,628 m)
On October 23, the normal high in City Creek Water Treatment Plant is 60°F and the normal low 34°F, and the chance of measurable rain or snow is 26%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for City Creek Water Treatment Plant.
- Jan 38° 20°
- Feb 43° 22°
- Mar 52° 29°
- Apr 59° 34°
- May 69° 41°
- Jun 80° 49°
- Jul 89° 57°
- Aug 87° 56°
- Sep 78° 47°
- Oct 63° 36°
- Nov 48° 27°
- Dec 38° 20°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at City Creek Water Treatment Plant each month?
July is the warmest month, with normal highs of 89°F; January the coldest, with normal lows of 20°F. The most precipitation falls in April (3.56 in), the least in July (0.68 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 38°F | 20°F | 28.7°F | 2.77 | 22.6 | 11 | <1 | 30 | 9 h 30 min |
| February | 43°F | 22°F | 32.6°F | 2.47 | 20.7 | 10 | <1 | 26 | 10 h 40 min |
| March | 52°F | 29°F | 40.4°F | 2.94 | 16.2 | 10 | <1 | 22 | 11 h 50 min |
| April | 59°F | 34°F | 46.4°F | 3.56 | 13.2 | 10 | <1 | 13 | 13 h 20 min |
| May | 69°F | 41°F | 55.2°F | 2.95 | 0.8 | 9 | <1 | 3 | 14 h 30 min |
| June | 80°F | 49°F | 64.3°F | 1.49 | 0.0 | 5 | 5 | <1 | 15 h |
| July | 89°F | 57°F | 72.8°F | 0.68 | 0.0 | 4 | 18 | <1 | 14 h 50 min |
| August | 87°F | 56°F | 71.5°F | 0.75 | 0.0 | 5 | 12 | <1 | 13 h 50 min |
| September | 78°F | 47°F | 62.5°F | 1.81 | 0.0 | 6 | 1 | 1 | 12 h 30 min |
| October | 63°F | 36°F | 49.4°F | 2.28 | 2.2 | 8 | <1 | 10 | 11 h 10 min |
| November | 48°F | 27°F | 37.6°F | 2.41 | 11.6 | 9 | <1 | 23 | 10 h |
| December | 38°F | 20°F | 28.8°F | 2.62 | 26.2 | 11 | <1 | 30 | 9 h 20 min |
| Year (annual) | 62°F | 37°F | 49.2°F | 26.73 | 113.5 | 98 | 35 | 157 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 3°C | −7°C | −1.8°C | 70 mm | 57 cm |
| February | 6°C | −5°C | 0.3°C | 63 mm | 53 cm |
| March | 11°C | −2°C | 4.7°C | 75 mm | 41 cm |
| April | 15°C | 1°C | 8.0°C | 90 mm | 34 cm |
| May | 21°C | 5°C | 12.9°C | 75 mm | 2 cm |
| June | 27°C | 9°C | 17.9°C | 38 mm | 0 cm |
| July | 32°C | 14°C | 22.7°C | 17 mm | 0 cm |
| August | 31°C | 13°C | 21.9°C | 19 mm | 0 cm |
| September | 25°C | 9°C | 16.9°C | 46 mm | 0 cm |
| October | 17°C | 2°C | 9.7°C | 58 mm | 6 cm |
| November | 9°C | −3°C | 3.1°C | 61 mm | 29 cm |
| December | 3°C | −7°C | −1.8°C | 67 mm | 67 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00421446; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at City Creek Water Treatment Plant?
Normal highs sit between 65°F and 85°F in May, June and September. Of those, June has the fewest days with rain (5).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00421446.
When is the last frost at City Creek Water Treatment Plant?
In City Creek Water Treatment Plant, the last spring frost (32°F) comes after May 13 in half of years and after May 31 in one year in ten; the first autumn frost comes before October 7 in half of years and before September 26 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 131 year in 10 after May 31; 9 in 10 after April 27
- First autumn frost, half of years before
- October 71 year in 10 before September 26; 9 in 10 before October 22
NOAA puts the median frost-free season at 146 days, and the season without a hard freeze (28°F) at 174 days.
A hard freeze (28°F) comes after April 28 in half of springs and before October 19 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts City Creek Water Treatment Plant in zone 6b in ZIP code 84103, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 6b: the coldest night of a typical year reaches −1°F (17 complete years).
Frost dates for every NOAA station in Utah · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00421446; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at City Creek Water Treatment Plant?
In a normal year in City Creek Water Treatment Plant, 35 days a year reach 90°F, 157 nights fall to 32°F or colder and 98 days bring measurable precipitation.
- Days at 90°F or more
- 35a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 157a normal year
- Days that stay below freezing
- 23high of 32°F or less
- Days with 0.01 inch of precipitation
- 98a normal year
- Days with 1 inch of snow or more
- 29a normal year
The highest temperature in this station's record (since 1966) is 101°F, on July 13, 2026; the lowest is −9°F, on December 9, 2013.
The wettest calendar year on that record is 2019, with 33.61 in; the snowiest season is 1948–49, with 210.4 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00421446; records: ACIS (NOAA Regional Climate Centers), station USC00421446. Records use complete months only; a month missing more than three days is left out.
How sunny is it at City Creek Water Treatment Plant?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds at City Creek Water Treatment Plant, 4.8 kWh per square metre a day. July is the sunniest month (88%) and December the cloudiest (67%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 71% | 2.3 |
| February | 72% | 3.2 |
| March | 75% | 4.5 |
| April | 74% | 5.6 |
| May | 77% | 6.6 |
| June | 86% | 7.8 |
| July | 88% | 7.5 |
| August | 86% | 6.6 |
| September | 85% | 5.4 |
| October | 80% | 3.8 |
| November | 72% | 2.5 |
| December | 67% | 1.9 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does City Creek Water Treatment Plant record?
A normal year at City Creek Water Treatment Plant brings 6,335 heating degree days, 18% more than the median U.S. place (5,373), and 595 cooling degree days, 34% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,543 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,124 | 0 |
| February | 907 | 0 |
| March | 763 | 0 |
| April | 560 | 0 |
| May | 314 | 10 |
| June | 97 | 75 |
| July | 4 | 244 |
| August | 9 | 210 |
| September | 128 | 55 |
| October | 484 | 1 |
| November | 824 | 0 |
| December | 1,122 | 0 |
| Year (annual) | 6,335 | 595 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00421446. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Have recent years at City Creek Water Treatment Plant been warmer than normal?
2025 averaged 52.7°F, 3.5°F above the 1991-2020 normal of 49.2°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 51.0°F | +1.8°F | 26.91 | 95.8 |
| 2022 | 49.2°F | at normal | 22.49 | 103.3 |
| 2023 | 49.4°F | +0.2°F | 28.73 | 129.4 |
| 2024 | 51.3°F | +2.1°F | 25.49 | 78.6 |
| 2025 | 52.7°F | +3.5°F | 20.11 | 66.3 |
Source: observed years: ACIS, station USC00421446. A year counts only with all twelve months complete.
How does City Creek Water Treatment Plant's climate compare?
City Creek Water Treatment Plant is warmer than 44 of the 97 places with their own NOAA record in Utah, and wetter than 88. Across the 7,247 U.S. stations with normals, its annual mean of 49.2°F is warmer than 37%.
In the Köppen classification computed from these normals, City Creek Water Treatment Plant is Dsa: continental, dry-summer, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Questions about City Creek Water Treatment Plant's climate
What is the coldest month at City Creek Water Treatment Plant?
January, with a normal high of 38°F and a normal low of 20°F. The warmest is July (89°F by day, 57°F at night).
Does it snow at City Creek Water Treatment Plant?
Yes: 114 inches in a normal year, falling on 37 days with 0.1 inch or more, the most in December (26.2 inches).
What is the rainiest month at City Creek Water Treatment Plant?
April, with 3.56 in of precipitation in a normal year; the driest is July with 0.68 in.
What plant hardiness zone is City Creek Water Treatment Plant in?
The USDA's 2023 map puts City Creek Water Treatment Plant in zone 6b in ZIP code 84103, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −1°F (17 years, 1991-2020): zone 6b.
How late can frost come at City Creek Water Treatment Plant?
In half of years the last 32°F night comes after May 13; in one year in ten it comes after May 31. Waiting until May 31 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Utah climateThe statewide normals and every place in the state
- North Salt Lake, UT4 miles from this station, 51.9°F a year
- Salt Lake Triad Center, UT4 miles from this station, 55.8°F a year
- Bountiful, UT6 miles from this station, 51.2°F a year
- Mountain Dell Dam, UT7 miles from this station, 50.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made