Hourglass Reservoir, Colorado climate: Climate normals at a NOAA weather station
Hourglass Reservoir's normal year runs from 11°F January nights to 74°F July afternoons, with 20.6 inches of precipitation and 174 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 3.0°C, January lows of −12°C, July highs of 24°C, 522 mm of precipitation a year.
- NOAA stationHourglass Reservoir
- Station IDUSC00054135
- Location40.58°N 105.63°W
- Elevation9,520 ft (2,902 m)
On October 23, the normal high in Hourglass Reservoir is 48°F and the normal low 24°F, and the chance of measurable rain or snow is 25%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Hourglass Reservoir.
- Jan 31° 11°
- Feb 33° 10°
- Mar 40° 15°
- Apr 45° 20°
- May 55° 28°
- Jun 68° 36°
- Jul 74° 43°
- Aug 72° 41°
- Sep 65° 34°
- Oct 51° 26°
- Nov 39° 18°
- Dec 31° 11°
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 Hourglass Reservoir each month?
July is the warmest month, with normal highs of 74°F; January the coldest, with normal lows of 11°F. The most precipitation falls in April (2.61 in), the least in January (1.23 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 31°F | 11°F | 20.9°F | 1.23 | 16.2 | 9 | <1 | 31 | 9 h 30 min |
| February | 33°F | 10°F | 21.4°F | 1.52 | 20.0 | 10 | <1 | 28 | 10 h 40 min |
| March | 40°F | 15°F | 27.7°F | 2.26 | 28.5 | 10 | <1 | 30 | 11 h 50 min |
| April | 45°F | 20°F | 32.5°F | 2.61 | 35.7 | 11 | <1 | 29 | 13 h 10 min |
| May | 55°F | 28°F | 41.6°F | 2.28 | 14.8 | 10 | <1 | 23 | 14 h 20 min |
| June | 68°F | 36°F | 52.3°F | 1.36 | 1.6 | 10 | <1 | 6 | 15 h |
| July | 74°F | 43°F | 58.6°F | 1.95 | 0.0 | 13 | <1 | 1 | 14 h 50 min |
| August | 72°F | 41°F | 56.4°F | 1.74 | 0.0 | 14 | <1 | 1 | 13 h 50 min |
| September | 65°F | 34°F | 49.6°F | 1.57 | 2.5 | 9 | <1 | 10 | 12 h 30 min |
| October | 51°F | 26°F | 38.4°F | 1.36 | 13.6 | 8 | <1 | 25 | 11 h 10 min |
| November | 39°F | 18°F | 28.3°F | 1.34 | 21.4 | 9 | <1 | 28 | 10 h |
| December | 31°F | 11°F | 20.9°F | 1.35 | 19.5 | 9 | <1 | 31 | 9 h 20 min |
| Year (annual) | 50°F | 24°F | 37.4°F | 20.57 | 173.8 | 122 | <1 | 241 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −1°C | −12°C | −6.2°C | 31 mm | 41 cm |
| February | 0°C | −12°C | −5.9°C | 39 mm | 51 cm |
| March | 5°C | −9°C | −2.4°C | 57 mm | 72 cm |
| April | 7°C | −7°C | 0.3°C | 66 mm | 91 cm |
| May | 13°C | −2°C | 5.3°C | 58 mm | 38 cm |
| June | 20°C | 2°C | 11.3°C | 35 mm | 4 cm |
| July | 24°C | 6°C | 14.8°C | 50 mm | 0 cm |
| August | 22°C | 5°C | 13.6°C | 44 mm | 0 cm |
| September | 18°C | 1°C | 9.8°C | 40 mm | 6 cm |
| October | 11°C | −4°C | 3.6°C | 35 mm | 35 cm |
| November | 4°C | −8°C | −2.1°C | 34 mm | 54 cm |
| December | −1°C | −12°C | −6.2°C | 34 mm | 50 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00054135; 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 Hourglass Reservoir?
Normal highs sit between 65°F and 85°F in June, July and August. Of those, June has the fewest days with rain (10).
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 USC00054135.
How hot and how cold does it get at Hourglass Reservoir?
In a normal year in Hourglass Reservoir, a 90°F day is rare, 241 nights fall to 32°F or colder and 122 days bring measurable precipitation.
- Days at 90°F or more
- fewer than 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 241a normal year
- Days that stay below freezing
- 69high of 32°F or less
- Days with 0.01 inch of precipitation
- 122a normal year
- Days with 1 inch of snow or more
- 59a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00054135.
How sunny is it at Hourglass Reservoir?
Over a year 76% of the sunlight that would reach the ground under clear skies gets through the clouds at Hourglass Reservoir, 4.6 kWh per square metre a day. September is the sunniest month (80%) and May the cloudiest (69%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 79% | 2.5 |
| February | 79% | 3.5 |
| March | 77% | 4.7 |
| April | 71% | 5.4 |
| May | 69% | 6.0 |
| June | 78% | 7.0 |
| July | 77% | 6.6 |
| August | 76% | 5.8 |
| September | 80% | 5.0 |
| October | 77% | 3.7 |
| November | 76% | 2.6 |
| December | 76% | 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 Hourglass Reservoir record?
A normal year at Hourglass Reservoir brings 10,054 heating degree days, 87% more than the median U.S. place (5,373), and 6 cooling degree days, 99% fewer than the median (908). Ten months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 697 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,367 | 0 |
| February | 1,222 | 0 |
| March | 1,156 | 0 |
| April | 974 | 0 |
| May | 724 | 0 |
| June | 383 | 1 |
| July | 204 | 4 |
| August | 269 | 1 |
| September | 464 | 0 |
| October | 825 | 0 |
| November | 1,100 | 0 |
| December | 1,367 | 0 |
| Year (annual) | 10,054 | 6 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00054135. 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.
How does Hourglass Reservoir's climate compare?
Hourglass Reservoir is warmer than 8 of the 125 places with their own NOAA record in Colorado, and wetter than 110. Across the 7,247 U.S. stations with normals, its annual mean of 37.4°F is warmer than 3%.
In the Köppen classification computed from these normals, Hourglass Reservoir is Dfc: continental, no dry season, cool 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 Hourglass Reservoir's climate
What is the coldest month at Hourglass Reservoir?
January, with a normal high of 31°F and a normal low of 11°F. The warmest is July (74°F by day, 43°F at night).
Does it snow at Hourglass Reservoir?
Yes: 174 inches in a normal year, falling on 69 days with 0.1 inch or more, the most in April (35.7 inches).
What is the rainiest month at Hourglass Reservoir?
April, with 2.61 in of precipitation in a normal year; the driest is January with 1.23 in.
What plant hardiness zone is Hourglass Reservoir in?
The USDA's 2023 map puts Hourglass Reservoir in zone 5b in ZIP code 80512, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −16°F (23 years, 1991-2020): zone 5a.
Nearby and next
- Colorado climateThe statewide normals and every place in the state
- Rustic (9 mi WSW), CO9 miles from this station, 41.6°F a year
- Estes Park, CO17 miles from this station, 43.0°F a year
- Buckhorn Mountain (1 mi E), CO18 miles from this station, 46.1°F a year
- Gould 4 mi SE State Forest State Park, CO21 miles from this station, 34.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made