Julesburg, Colorado climate: Normal weather by month, frost dates and records
Julesburg's normal year runs from 16°F January nights to 88°F July afternoons, with 18.6 inches of precipitation and 22 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.0°C, January lows of −9°C, July highs of 31°C, 471 mm of precipitation a year.
- NOAA stationJulesburg
- Station IDUSC00054413
- Location40.99°N 102.27°W
- Elevation3,477 ft (1,060 m)
- Population1,223
On October 23, the normal high in Julesburg is 61°F and the normal low 32°F, and the chance of measurable rain or snow is 13%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Julesburg.
- Jan 41° 16°
- Feb 44° 18°
- Mar 55° 26°
- Apr 62° 35°
- May 71° 45°
- Jun 82° 55°
- Jul 88° 61°
- Aug 85° 59°
- Sep 78° 49°
- Oct 65° 35°
- Nov 51° 24°
- Dec 41° 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 in Julesburg each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 16°F. The most precipitation falls in June (3.20 in), the least in December (0.29 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 41°F | 16°F | 28.2°F | 0.41 | 3.7 | 2 | <1 | 30 | 9 h 30 min |
| February | 44°F | 18°F | 31.1°F | 0.41 | 4.0 | 3 | <1 | 27 | 10 h 40 min |
| March | 55°F | 26°F | 40.2°F | 1.00 | 3.3 | 4 | <1 | 24 | 11 h 50 min |
| April | 62°F | 35°F | 48.3°F | 1.77 | 2.3 | 6 | <1 | 11 | 13 h 20 min |
| May | 71°F | 45°F | 57.7°F | 3.00 | 0.1 | 8 | 2 | 2 | 14 h 30 min |
| June | 82°F | 55°F | 68.4°F | 3.20 | 0.0 | 8 | 9 | <1 | 15 h 10 min |
| July | 88°F | 61°F | 74.4°F | 2.33 | 0.0 | 7 | 18 | <1 | 14 h 50 min |
| August | 85°F | 59°F | 72.1°F | 2.79 | 0.0 | 7 | 13 | <1 | 13 h 50 min |
| September | 78°F | 49°F | 63.6°F | 1.52 | 0.0 | 5 | 6 | <1 | 12 h 30 min |
| October | 65°F | 35°F | 49.9°F | 1.43 | 2.0 | 5 | <1 | 11 | 11 h 10 min |
| November | 51°F | 24°F | 37.6°F | 0.41 | 2.8 | 2 | <1 | 26 | 10 h |
| December | 41°F | 16°F | 28.3°F | 0.29 | 3.5 | 1 | <1 | 30 | 9 h 20 min |
| Year (annual) | 63°F | 37°F | 50.0°F | 18.56 | 21.7 | 56 | 48 | 163 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 5°C | −9°C | −2.1°C | 10 mm | 9 cm |
| February | 7°C | −8°C | −0.5°C | 10 mm | 10 cm |
| March | 13°C | −3°C | 4.6°C | 25 mm | 8 cm |
| April | 17°C | 1°C | 9.1°C | 45 mm | 6 cm |
| May | 22°C | 7°C | 14.3°C | 76 mm | 0 cm |
| June | 28°C | 13°C | 20.2°C | 81 mm | 0 cm |
| July | 31°C | 16°C | 23.6°C | 59 mm | 0 cm |
| August | 30°C | 15°C | 22.3°C | 71 mm | 0 cm |
| September | 26°C | 9°C | 17.6°C | 39 mm | 0 cm |
| October | 18°C | 2°C | 9.9°C | 36 mm | 5 cm |
| November | 11°C | −4°C | 3.1°C | 10 mm | 7 cm |
| December | 5°C | −9°C | −2.1°C | 7 mm | 9 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00054413; 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 Julesburg?
Normal highs sit between 65°F and 85°F in May, June and September. Of those, September 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 USC00054413.
When is the last frost in Julesburg?
In Julesburg, the last spring frost (32°F) comes after May 7 in half of years and after May 18 in one year in ten; the first autumn frost comes before October 6 in half of years and before September 23 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 71 year in 10 after May 18; 9 in 10 after April 23
- First autumn frost, half of years before
- October 61 year in 10 before September 23; 9 in 10 before October 17
NOAA puts the median frost-free season at 152 days, and the season without a hard freeze (28°F) at 170 days.
A hard freeze (28°F) comes after April 27 in half of springs and before October 15 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Julesburg in zone 5b in ZIP code 80737, the nearest ZIP area.
Frost dates for every NOAA station in Colorado · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00054413; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 Julesburg?
In a normal year in Julesburg, 48 days a year reach 90°F (4 of them 100°F or more), 163 nights fall to 32°F or colder and 56 days bring measurable precipitation.
- Days at 90°F or more
- 48a normal year
- Days at 100°F or more
- 4a normal year
- Nights at 32°F or colder
- 163a normal year
- Days that stay below freezing
- 23high of 32°F or less
- Days with 0.01 inch of precipitation
- 56a normal year
- Days with 1 inch of snow or more
- 8a normal year
The highest temperature in this station's record (since 1893) is 109°F, on July 13, 1954; the lowest is −38°F, on December 9, 1919.
The wettest calendar year on that record is 1923, with 29.31 in; the snowiest season is 1983–84, with 66.1 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00054413; records: ACIS (NOAA Regional Climate Centers), station USC00054413. Records use complete months only; a month missing more than three days is left out.
How sunny is Julesburg?
Over a year 81% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Julesburg, 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 Julesburg need?
A normal year in Julesburg brings 6,230 heating degree days, 16% more than the median U.S. place (5,373), and 784 cooling degree days, 14% 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 2,910 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,141 | 0 |
| February | 949 | 0 |
| March | 769 | 0 |
| April | 504 | 2 |
| May | 254 | 28 |
| June | 46 | 148 |
| July | 4 | 296 |
| August | 12 | 232 |
| September | 118 | 75 |
| October | 472 | 4 |
| November | 822 | 0 |
| December | 1,139 | 0 |
| Year (annual) | 6,230 | 784 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00054413. 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 Julesburg been warmer than normal lately?
2021 averaged 50.7°F, 0.7°F above the 1991-2020 normal of 50.0°F.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 50.7°F | +0.7°F | 14.17 | 18.3 |
Over 55 complete years from 1893 to 2021, the station's annual mean temperature rose at a fitted 0.6°F per century (+0.03°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00054413; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Julesburg's climate compare?
Julesburg is warmer than 75 of the other 124 places with their own NOAA record in Colorado, and wetter than 98. Across the 7,247 U.S. stations with normals, its annual mean of 50.0°F is warmer than 40%.
In the Köppen classification computed from these normals, Julesburg 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 Julesburg share this climate record?
Venango has no NOAA station with 1991-2020 normals of its 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.
- Venango, NE151 people · 19 mi SE
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 Julesburg's climate
What is the coldest month in Julesburg?
January, with a normal high of 41°F and a normal low of 16°F. The warmest is July (88°F by day, 61°F at night).
Does it snow in Julesburg?
Yes: 22 inches in a normal year, falling on 11 days with 0.1 inch or more, the most in February (4.0 inches).
What is the rainiest month in Julesburg?
June, with 3.20 in of precipitation in a normal year; the driest is December with 0.29 in.
What plant hardiness zone is Julesburg in?
The USDA's 2023 map puts Julesburg in zone 5b in ZIP code 80737, the nearest ZIP area.
How late can frost come in Julesburg?
In half of years the last 32°F night comes after May 7; in one year in ten it comes after May 18. Waiting until May 18 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Colorado climateThe statewide normals and every place in the state
- Big Springs, NE11 miles from this station, 49.7°F a year
- Chappell, NE13 miles from this station, 48.6°F a year
- Sedgwick, CO16 miles from this station, 49.6°F a year
- Lodgepole, NE22 miles from this station, 49.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made