Leroy (5 mi WSW), Colorado climate: Climate normals at a NOAA weather station
Leroy (5 mi WSW)'s normal year runs from 15°F January nights to 88°F July afternoons, with 17.3 inches of precipitation and 37 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 9.3°C, January lows of −9°C, July highs of 31°C, 439 mm of precipitation a year.
- NOAA stationLeroy (5 mi WSW)
- Station IDUSC00054945
- Location40.51°N 102.99°W
- Elevation4,467 ft (1,362 m)
On October 23, the normal high in Leroy (5 mi WSW) is 60°F and the normal low 32°F, and the chance of measurable rain or snow is 16%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Leroy (5 mi WSW).
- Jan 40° 15°
- Feb 43° 17°
- Mar 53° 25°
- Apr 60° 31°
- May 69° 42°
- Jun 81° 52°
- Jul 88° 59°
- Aug 86° 56°
- Sep 78° 47°
- Oct 64° 35°
- Nov 50° 24°
- Dec 40° 16°
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 Leroy (5 mi WSW) each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 15°F. The most precipitation falls in July (3.01 in), the least in January (0.32 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 40°F | 15°F | 27.5°F | 0.32 | 4.7 | 3 | <1 | 30 | 9 h 30 min |
| February | 43°F | 17°F | 29.6°F | 0.51 | 6.4 | 4 | <1 | 27 | 10 h 40 min |
| March | 53°F | 25°F | 38.7°F | 0.87 | 5.6 | 6 | <1 | 24 | 11 h 50 min |
| April | 60°F | 31°F | 45.6°F | 1.76 | 5.1 | 8 | <1 | 15 | 13 h 10 min |
| May | 69°F | 42°F | 55.6°F | 2.78 | 0.9 | 11 | 1 | 3 | 14 h 20 min |
| June | 81°F | 52°F | 66.9°F | 2.30 | 0.0 | 9 | 7 | <1 | 15 h |
| July | 88°F | 59°F | 73.4°F | 3.01 | 0.0 | 8 | 16 | <1 | 14 h 50 min |
| August | 86°F | 56°F | 70.9°F | 2.32 | 0.0 | 8 | 12 | <1 | 13 h 50 min |
| September | 78°F | 47°F | 62.6°F | 1.25 | 0.4 | 6 | 5 | 1 | 12 h 30 min |
| October | 64°F | 35°F | 49.1°F | 1.16 | 2.3 | 5 | <1 | 11 | 11 h 10 min |
| November | 50°F | 24°F | 37.2°F | 0.55 | 5.0 | 4 | <1 | 24 | 10 h |
| December | 40°F | 16°F | 28.2°F | 0.44 | 6.2 | 4 | <1 | 30 | 9 h 20 min |
| Year (annual) | 63°F | 35°F | 48.8°F | 17.27 | 36.6 | 75 | 41 | 164 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 4°C | −9°C | −2.5°C | 8 mm | 12 cm |
| February | 6°C | −8°C | −1.3°C | 13 mm | 16 cm |
| March | 12°C | −4°C | 3.7°C | 22 mm | 14 cm |
| April | 15°C | 0°C | 7.6°C | 45 mm | 13 cm |
| May | 21°C | 6°C | 13.1°C | 71 mm | 2 cm |
| June | 27°C | 11°C | 19.4°C | 58 mm | 0 cm |
| July | 31°C | 15°C | 23.0°C | 76 mm | 0 cm |
| August | 30°C | 13°C | 21.6°C | 59 mm | 0 cm |
| September | 26°C | 8°C | 17.0°C | 32 mm | 1 cm |
| October | 18°C | 1°C | 9.5°C | 29 mm | 6 cm |
| November | 10°C | −4°C | 2.9°C | 14 mm | 13 cm |
| December | 5°C | −9°C | −2.1°C | 11 mm | 16 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00054945; 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 Leroy (5 mi WSW)?
Normal highs sit between 65°F and 85°F in May, June and September. 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 USC00054945.
When is the last frost at Leroy (5 mi WSW)?
In Leroy (5 mi WSW), the last spring frost (32°F) comes after May 10 in half of years and after May 22 in one year in ten; the first autumn frost comes before October 6 in half of years and before September 22 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 101 year in 10 after May 22; 9 in 10 after April 28
- First autumn frost, half of years before
- October 61 year in 10 before September 22; 9 in 10 before October 18
NOAA puts the median frost-free season at 147 days, and the season without a hard freeze (28°F) at 165 days.
A hard freeze (28°F) comes after April 30 in half of springs and before October 15 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Leroy (5 mi WSW) in zone 5b in ZIP code 80728, 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 5b: the coldest night of a typical year reaches −11°F (28 complete years).
Frost dates for every NOAA station in Colorado · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00054945; 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 Leroy (5 mi WSW)?
In a normal year in Leroy (5 mi WSW), 41 days a year reach 90°F (3 of them 100°F or more), 164 nights fall to 32°F or colder and 75 days bring measurable precipitation.
- Days at 90°F or more
- 41a normal year
- Days at 100°F or more
- 3a normal year
- Nights at 32°F or colder
- 164a normal year
- Days that stay below freezing
- 31high of 32°F or less
- Days with 0.01 inch of precipitation
- 75a normal year
- Days with 1 inch of snow or more
- 13a normal year
The highest temperature in this station's record (since 1893) is 108°F, on July 2, 1990; the lowest is −29°F, on February 8, 1936.
The wettest calendar year on that record is 1923, with 26.53 in; the snowiest season is 1983–84, with 96.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00054945; records: ACIS (NOAA Regional Climate Centers), station USC00054945. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Leroy (5 mi WSW)?
Over a year 81% of the sunlight that would reach the ground under clear skies gets through the clouds at Leroy (5 mi WSW), 4.7 kWh per square metre a day. July is the sunniest month (88%) and February the cloudiest (75%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 79% | 2.4 |
| February | 75% | 3.2 |
| March | 77% | 4.5 |
| April | 75% | 5.6 |
| May | 77% | 6.4 |
| June | 85% | 7.4 |
| July | 88% | 7.2 |
| August | 87% | 6.3 |
| September | 86% | 5.2 |
| October | 80% | 3.7 |
| November | 80% | 2.7 |
| December | 77% | 2.1 |
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 Leroy (5 mi WSW) record?
A normal year at Leroy (5 mi WSW) brings 6,564 heating degree days, 22% more than the median U.S. place (5,373), and 682 cooling degree days, 25% 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 2,708 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,163 | 0 |
| February | 990 | 0 |
| March | 814 | 0 |
| April | 583 | 1 |
| May | 310 | 18 |
| June | 65 | 120 |
| July | 9 | 268 |
| August | 21 | 203 |
| September | 140 | 68 |
| October | 498 | 3 |
| November | 834 | 0 |
| December | 1,139 | 0 |
| Year (annual) | 6,564 | 682 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00054945. 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 Leroy (5 mi WSW) been warmer than normal?
2025 averaged 51.0°F, 2.2°F above the 1991-2020 normal of 48.8°F. 3 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 50.0°F | +1.2°F | 15.23 | 18.0 |
| 2022 | 48.2°F | −0.6°F | 11.21 | 36.8 |
| 2023 | 48.6°F | −0.2°F | 20.15 | 49.3 |
| 2024 | 51.6°F | +2.8°F | 18.63 | 26.4 |
| 2025 | 51.0°F | +2.2°F | 17.43 | 13.6 |
Over 44 complete years from 1971 to 2025, the station's annual mean temperature rose at a fitted 3.9°F per century (+0.22°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00054945; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Leroy (5 mi WSW)'s climate compare?
Leroy (5 mi WSW) is warmer than 60 of the 125 places with their own NOAA record in Colorado, and wetter than 85. Across the 7,247 U.S. stations with normals, its annual mean of 48.8°F is warmer than 35%.
In the Köppen classification computed from these normals, Leroy (5 mi WSW) is BSk: cold semi-arid steppe. 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 Leroy (5 mi WSW)'s climate
What is the coldest month at Leroy (5 mi WSW)?
January, with a normal high of 40°F and a normal low of 15°F. The warmest is July (88°F by day, 59°F at night).
Does it snow at Leroy (5 mi WSW)?
Yes: 37 inches in a normal year, falling on 20 days with 0.1 inch or more, the most in February (6.4 inches).
What is the rainiest month at Leroy (5 mi WSW)?
July, with 3.01 in of precipitation in a normal year; the driest is January with 0.32 in.
What plant hardiness zone is Leroy (5 mi WSW) in?
The USDA's 2023 map puts Leroy (5 mi WSW) in zone 5b in ZIP code 80728, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −11°F (28 years, 1991-2020): zone 5b.
How late can frost come at Leroy (5 mi WSW)?
In half of years the last 32°F night comes after May 10; in one year in ten it comes after May 22. Waiting until May 22 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Colorado climateThe statewide normals and every place in the state
- Fleming, CO12 miles from this station, 50.8°F a year
- Sterling, CO14 miles from this station, 51.4°F a year
- Crook, CO26 miles from this station, 50.5°F a year
- Akron, CO27 miles from this station, 50.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made