Holyoke, Colorado climate: Normal weather by month, frost dates and records
Holyoke's normal year runs from 13°F January nights to 88°F July afternoons, with 17.9 inches of precipitation and 30 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 9.4°C, January lows of −11°C, July highs of 31°C, 455 mm of precipitation a year.
- NOAA stationHolyoke
- Station IDUSC00054082
- Location40.55°N 102.34°W
- Elevation3,780 ft (1,152 m)
- Population2,296
On October 24, the normal high in Holyoke is 62°F and the normal low 29°F, and the chance of measurable rain or snow is 17%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Holyoke.
- Jan 42° 13°
- Feb 44° 15°
- Mar 54° 23°
- Apr 62° 31°
- May 71° 43°
- Jun 83° 53°
- Jul 88° 59°
- Aug 86° 56°
- Sep 79° 47°
- Oct 65° 33°
- Nov 53° 21°
- Dec 42° 13°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Holyoke each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 13°F. The most precipitation falls in May (2.83 in), the least in January (0.32 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 42°F | 13°F | 27.2°F | 0.32 | 4.5 | 3 | <1 | 31 | 9 h 30 min |
| February | 44°F | 15°F | 29.4°F | 0.51 | 6.1 | 5 | <1 | 27 | 10 h 40 min |
| March | 54°F | 23°F | 38.4°F | 0.86 | 4.4 | 6 | <1 | 26 | 11 h 50 min |
| April | 62°F | 31°F | 46.4°F | 1.92 | 3.7 | 9 | <1 | 14 | 13 h 10 min |
| May | 71°F | 43°F | 56.7°F | 2.83 | 0.2 | 11 | 1 | 2 | 14 h 20 min |
| June | 83°F | 53°F | 67.8°F | 2.76 | 0.0 | 9 | 7 | <1 | 15 h |
| July | 88°F | 59°F | 73.3°F | 2.75 | 0.0 | 9 | 15 | <1 | 14 h 50 min |
| August | 86°F | 56°F | 71.1°F | 2.39 | 0.0 | 8 | 11 | <1 | 13 h 50 min |
| September | 79°F | 47°F | 62.6°F | 1.40 | 0.2 | 6 | 5 | <1 | 12 h 30 min |
| October | 65°F | 33°F | 49.0°F | 1.23 | 1.9 | 6 | <1 | 12 | 11 h 10 min |
| November | 53°F | 21°F | 37.0°F | 0.52 | 3.9 | 4 | <1 | 27 | 10 h |
| December | 42°F | 13°F | 27.6°F | 0.44 | 5.5 | 4 | <1 | 31 | 9 h 20 min |
| Year (annual) | 64°F | 34°F | 48.9°F | 17.93 | 30.4 | 78 | 40 | 170 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 5°C | −11°C | −2.7°C | 8 mm | 11 cm |
| February | 7°C | −10°C | −1.4°C | 13 mm | 15 cm |
| March | 12°C | −5°C | 3.6°C | 22 mm | 11 cm |
| April | 17°C | 0°C | 8.0°C | 49 mm | 9 cm |
| May | 22°C | 6°C | 13.7°C | 72 mm | 1 cm |
| June | 28°C | 12°C | 19.9°C | 70 mm | 0 cm |
| July | 31°C | 15°C | 22.9°C | 70 mm | 0 cm |
| August | 30°C | 13°C | 21.7°C | 61 mm | 0 cm |
| September | 26°C | 8°C | 17.0°C | 36 mm | 1 cm |
| October | 18°C | 0°C | 9.4°C | 31 mm | 5 cm |
| November | 11°C | −6°C | 2.8°C | 13 mm | 10 cm |
| December | 6°C | −11°C | −2.4°C | 11 mm | 14 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00054082; 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.
When is the best weather to visit Holyoke?
Normal highs sit between 65°F and 85°F in May, June, September and October. Of those, October 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 USC00054082.
When is the last frost in Holyoke?
In Holyoke, the last spring frost (32°F) comes after May 11 in half of years and after May 23 in one year in ten; the first autumn frost comes before October 3 in half of years and before September 20 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 111 year in 10 after May 23; 9 in 10 after April 30
- First autumn frost, half of years before
- October 31 year in 10 before September 20; 9 in 10 before October 13
NOAA puts the median frost-free season at 144 days, and the season without a hard freeze (28°F) at 162 days.
A hard freeze (28°F) comes after May 1 in half of springs and before October 12 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Holyoke in zone 5b in ZIP code 80734, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Holyoke's NOAA station is in zone 5b: the coldest night of a typical year reaches −13°F (30 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 USC00054082; 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 in Holyoke?
In a normal year in Holyoke, 40 days a year reach 90°F (4 of them 100°F or more), 170 nights fall to 32°F or colder and 78 days bring measurable precipitation.
- Days at 90°F or more
- 40a normal year
- Days at 100°F or more
- 4a normal year
- Nights at 32°F or colder
- 170a normal year
- Days that stay below freezing
- 28high of 32°F or less
- Days with 0.01 inch of precipitation
- 78a normal year
- Days with 1 inch of snow or more
- 11a normal year
The highest temperature in this station's record (since 1897) is 110°F, on June 27, 2012; the lowest is −36°F, on February 12, 1899.
The wettest calendar year on that record is 2009, with 27.15 in; the snowiest season is 1972–73, with 67.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00054082; records: ACIS (NOAA Regional Climate Centers), station USC00054082. Records use complete months only; a month missing more than three days is left out.
How sunny is Holyoke?
Over a year 81% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Holyoke, 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 much heating and cooling does Holyoke need?
A normal year in Holyoke brings 6,546 heating degree days, 22% more than the median U.S. place (5,373), and 700 cooling degree days, 23% fewer 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 2,755 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,173 | 0 |
| February | 998 | 0 |
| March | 825 | 0 |
| April | 557 | 1 |
| May | 281 | 24 |
| June | 52 | 136 |
| July | 7 | 264 |
| August | 17 | 206 |
| September | 138 | 66 |
| October | 497 | 3 |
| November | 842 | 0 |
| December | 1,158 | 0 |
| Year (annual) | 6,546 | 700 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00054082. 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.
Has Holyoke been warmer than normal lately?
2025 averaged 50.7°F, 1.8°F above the 1991-2020 normal of 48.9°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 50.4°F | +1.5°F | 19.45 | 16.9 |
| 2022 | 49.4°F | +0.5°F | 9.69 | 35.3 |
| 2023 | 49.1°F | +0.2°F | 18.45 | 40.4 |
| 2024 | 51.8°F | +2.9°F | 21.57 | 23.4 |
| 2025 | 50.7°F | +1.8°F | 21.73 | 19.3 |
Over 67 complete years from 1949 to 2025, the station's annual mean temperature rose at a fitted 3.8°F per century (+0.21°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00054082; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Holyoke's climate compare?
Holyoke is warmer than 63 of the other 124 places with their own NOAA record in Colorado, and wetter than 91. Across the 7,247 U.S. stations with normals, its annual mean of 48.9°F is warmer than 36%.
In the Köppen classification computed from these normals, Holyoke 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.
Which places near Holyoke share this climate record?
3 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.
- Amherst, CO84 people · 13 mi NE
- Paoli, CO50 people · 8 mi NW
- Lamar, NE27 people · 19 mi E
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 Holyoke's climate
What is the coldest month in Holyoke?
January, with a normal high of 42°F and a normal low of 13°F. The warmest is July (88°F by day, 59°F at night).
Does it snow in Holyoke?
Yes: 30 inches in a normal year, falling on 18 days with 0.1 inch or more, the most in February (6.1 inches).
What is the rainiest month in Holyoke?
May, with 2.83 in of precipitation in a normal year; the driest is January with 0.32 in.
What plant hardiness zone is Holyoke in?
The USDA's 2023 map puts Holyoke in zone 5b in ZIP code 80734, the nearest ZIP area. By the same method at Holyoke's NOAA station, the coldest night of a typical year reaches −13°F (30 years, 1991-2020): zone 5b.
How late can frost come in Holyoke?
In half of years the last 32°F night comes after May 11; in one year in ten it comes after May 23. Waiting until May 23 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Colorado climateThe statewide normals and every place in the state
- Sedgwick, CO24 miles from this station, 49.6°F a year
- Fleming, CO28 miles from this station, 50.8°F a year
- Julesburg, CO31 miles from this station, 50.0°F a year
- Crook, CO32 miles from this station, 50.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made