Spanish Fork Power House, Utah climate: Climate normals at a NOAA weather station
Spanish Fork Power House's normal year runs from 22°F January nights to 93°F July afternoons, with 20.2 inches of precipitation and 66 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.6°C, January lows of −6°C, July highs of 34°C, 513 mm of precipitation a year.
- NOAA stationSpanish Fork Power House
- Station IDUSC00428119
- Location40.08°N 111.60°W
- Elevation4,720 ft (1,439 m)
On October 23, the normal high in Spanish Fork Power House is 63°F and the normal low 38°F, and the chance of measurable rain or snow is 23%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Spanish Fork Power House.
- Jan 38° 22°
- Feb 45° 26°
- Mar 57° 33°
- Apr 64° 38°
- May 74° 46°
- Jun 86° 53°
- Jul 93° 61°
- Aug 91° 60°
- Sep 81° 51°
- Oct 67° 41°
- Nov 51° 31°
- Dec 38° 23°
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 Spanish Fork Power House each month?
July is the warmest month, with normal highs of 93°F; January the coldest, with normal lows of 22°F. The most precipitation falls in April (2.47 in), the least in July (0.57 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 38°F | 22°F | 30.1°F | 2.11 | 17.3 | 10 | <1 | 28 | 9 h 40 min |
| February | 45°F | 26°F | 35.4°F | 2.08 | 14.1 | 10 | <1 | 22 | 10 h 40 min |
| March | 57°F | 33°F | 44.7°F | 2.16 | 6.8 | 9 | <1 | 15 | 11 h 50 min |
| April | 64°F | 38°F | 51.1°F | 2.47 | 4.2 | 11 | <1 | 6 | 13 h 10 min |
| May | 74°F | 46°F | 60.0°F | 2.11 | 0.0 | 9 | 1 | 1 | 14 h 20 min |
| June | 86°F | 53°F | 69.5°F | 0.97 | 0.0 | 5 | 12 | <1 | 15 h |
| July | 93°F | 61°F | 77.1°F | 0.57 | 0.0 | 4 | 25 | <1 | 14 h 50 min |
| August | 91°F | 60°F | 75.2°F | 0.74 | 0.0 | 5 | 20 | <1 | 13 h 50 min |
| September | 81°F | 51°F | 66.0°F | 1.40 | 0.0 | 6 | 3 | <1 | 12 h 30 min |
| October | 67°F | 41°F | 53.7°F | 1.81 | 0.5 | 7 | <1 | 4 | 11 h 10 min |
| November | 51°F | 31°F | 40.9°F | 1.80 | 7.4 | 8 | <1 | 16 | 10 h |
| December | 38°F | 23°F | 30.6°F | 1.97 | 15.7 | 10 | <1 | 27 | 9 h 20 min |
| Year (annual) | 65°F | 40°F | 52.8°F | 20.19 | 66.0 | 94 | 60 | 118 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 3°C | −6°C | −1.1°C | 54 mm | 44 cm |
| February | 7°C | −4°C | 1.9°C | 53 mm | 36 cm |
| March | 14°C | 0°C | 7.1°C | 55 mm | 17 cm |
| April | 18°C | 3°C | 10.6°C | 63 mm | 11 cm |
| May | 24°C | 8°C | 15.6°C | 54 mm | 0 cm |
| June | 30°C | 12°C | 20.8°C | 25 mm | 0 cm |
| July | 34°C | 16°C | 25.1°C | 14 mm | 0 cm |
| August | 33°C | 15°C | 24.0°C | 19 mm | 0 cm |
| September | 27°C | 11°C | 18.9°C | 36 mm | 0 cm |
| October | 19°C | 5°C | 12.1°C | 46 mm | 1 cm |
| November | 10°C | −1°C | 4.9°C | 46 mm | 19 cm |
| December | 4°C | −5°C | −0.8°C | 50 mm | 40 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00428119; 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 Spanish Fork Power House?
Normal highs sit between 65°F and 85°F in May, September and October. Of those, September has the fewest days with rain (6).
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 USC00428119.
When is the last frost at Spanish Fork Power House?
In Spanish Fork Power House, the last spring frost (32°F) comes after April 25 in half of years and after May 13 in one year in ten; the first autumn frost comes before October 18 in half of years and before October 4 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
- April 251 year in 10 after May 13; 9 in 10 after April 10
- First autumn frost, half of years before
- October 181 year in 10 before October 4; 9 in 10 before November 1
NOAA puts the median frost-free season at 174 days, and the season without a hard freeze (28°F) at 201 days.
A hard freeze (28°F) comes after April 9 in half of springs and before October 30 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Spanish Fork Power House in zone 7a in ZIP code 84664, 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 7a: the coldest night of a typical year reaches 1°F (30 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 USC00428119; 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 Spanish Fork Power House?
In a normal year in Spanish Fork Power House, 60 days a year reach 90°F (4 of them 100°F or more), 118 nights fall to 32°F or colder and 94 days bring measurable precipitation.
- Days at 90°F or more
- 60a normal year
- Days at 100°F or more
- 4a normal year
- Nights at 32°F or colder
- 118a normal year
- Days that stay below freezing
- 20high of 32°F or less
- Days with 0.01 inch of precipitation
- 94a normal year
- Days with 1 inch of snow or more
- 22a normal year
The highest temperature in this station's record (since 1909) is 108°F, on July 26, 1931; the lowest is −20°F, on February 7, 1989.
The wettest calendar year on that record is 1983, with 37.16 in; the snowiest season is 1928–29, with 117.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00428119; records: ACIS (NOAA Regional Climate Centers), station USC00428119. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Spanish Fork Power House?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds at Spanish Fork Power House, 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 Spanish Fork Power House record?
A normal year at Spanish Fork Power House brings 5,415 heating degree days, 1% more than the median U.S. place (5,373), and 1,013 cooling degree days, 12% more than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,347 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,080 | 0 |
| February | 829 | 0 |
| March | 631 | 0 |
| April | 421 | 2 |
| May | 193 | 37 |
| June | 41 | 176 |
| July | 1 | 376 |
| August | 2 | 318 |
| September | 69 | 99 |
| October | 357 | 5 |
| November | 723 | 0 |
| December | 1,068 | 0 |
| Year (annual) | 5,415 | 1,013 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00428119. 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 Spanish Fork Power House been warmer than normal?
2025 averaged 55.5°F, 2.7°F above the 1991-2020 normal of 52.8°F. 3 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 54.5°F | +1.7°F | 20.65 | 49.1 |
| 2022 | 52.6°F | −0.2°F | 18.41 | 57.5 |
| 2023 | 52.0°F | −0.8°F | 21.85 | 78.3 |
| 2024 | 54.8°F | +2.0°F | 19.00 | 35.8 |
| 2025 | 55.5°F | +2.7°F | 18.05 | 23.5 |
Over 71 complete years from 1950 to 2025, the station's annual mean temperature rose at a fitted 3.7°F per century (+0.20°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00428119; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Spanish Fork Power House's climate compare?
Spanish Fork Power House is warmer than 80 of the 97 places with their own NOAA record in Utah, and wetter than 79. Across the 7,247 U.S. stations with normals, its annual mean of 52.8°F is warmer than 53%.
In the Köppen classification computed from these normals, Spanish Fork Power House 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.
Which places near Spanish Fork Power House share this climate record?
8 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Spanish Fork, UT47,809 people · 3 mi NW
- Mapleton, UT14,812 people · 3 mi NE
- Salem, UT11,283 people · 4 mi SW
- Elk Ridge, UT5,003 people · 6 mi SW
- Woodland Hills, UT1,613 people · 5 mi SW
- Lake Shore, UT1,242 people · 8 mi NW
- Benjamin, UT690 people · 7 mi W
- Palmyra, UT346 people · 6 mi NW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Spanish Fork Power House's climate
What is the coldest month at Spanish Fork Power House?
January, with a normal high of 38°F and a normal low of 22°F. The warmest is July (93°F by day, 61°F at night).
Does it snow at Spanish Fork Power House?
Yes: 66 inches in a normal year, falling on 27 days with 0.1 inch or more, the most in January (17.3 inches).
What is the rainiest month at Spanish Fork Power House?
April, with 2.47 in of precipitation in a normal year; the driest is July with 0.57 in.
What plant hardiness zone is Spanish Fork Power House in?
The USDA's 2023 map puts Spanish Fork Power House in zone 7a in ZIP code 84664, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 1°F (30 years, 1991-2020): zone 7a.
How late can frost come at Spanish Fork Power House?
In half of years the last 32°F night comes after April 25; in one year in ten it comes after May 13. Waiting until May 13 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Utah climateThe statewide normals and every place in the state
- Provo, UT12 miles from this station, 54.6°F a year
- Santaquin, UT12 miles from this station, 50.7°F a year
- Orem, UT16 miles from this station, 52.9°F a year
- Pleasant Grove, UT21 miles from this station, 54.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made