Miner Street Bridge · Photo: Thad Roan from Littleton, CO, USA · CC BY-SA 2.0Blue Valley gets about 195 inches of snow a winter, more than all but 22 U.S. towns
Expect July afternoons of about 74°. Summers stay cool: July afternoons here are cooler than in almost every U.S. town. Warming shows here too: 1.3° more than in 1901–2000, led by March. Central heating does most of its work from October to May, in months below 50° on average.
A year in Blue Valley at a glance
Each month’s typical high and low, and what it brings.
What stands out about Blue Valley’s climate
Compared with towns across the U.S., with Blue Valley’s place in Colorado beside it.
What a year in Blue Valley feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 103 frost-free days a year
In half of years the last 32° night comes by June 6 and the first by September 19. Frost and day counts come from Cabin Creek, CO, 12 miles away.
The 2023 USDA map puts Blue Valley’s center in zone 5b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −14°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
About 195 inches of snow a winter
Snow, measured at Coal Creek Canyon, CO, falls mostly in April. Precipitation (rain plus melted snow) adds up to 24 inches a year; April is the wettest month and January the driest. Rain or snow falls on about 136 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Blue Valley
Nearly all of the work is heating: a normal year has almost no cooling days. Months averaging under 55° run from September through June.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Cabin Creek, CO.
Living with Blue Valley’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
103 frost-free days in zone 5b. The last frost comes by Jun 6 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Sep 19.
Months with highs of 62–84° and lows of 40° or more: June, July and August. 0.8 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Blue Valley from natural hazards, avalanches are the largest share (71%). Normals are averages; the hazards page covers the extremes.
Natural hazards →Blue Valley and similar climates
TownRatings has no climate map of the towns around Blue Valley yet.
Climates most like Blue Valley’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Blue Valley, CO | 16° | 74° | 24" | 195" |
| Snyderville, UT | 18° | 80° | 26" | 153" |
| Incline Village, NV | 22° | 73° | 38" | 179" |
| Ishpeming, MI | 5° | 77° | 33" | 197" |
| South Lake Tahoe, CA | 22° | 81° | 19" | 179" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Blue Valley averaged 1.3° warmer than the 1900s. The biggest change is in March (+3.0°).
A smaller shift than in 51% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Blue Valley compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Blue Valley’s place among Colorado’s.
Blue Valley weather by month
Highs, lows and precipitation from NOAA’s grid at Blue Valley’s center; snow, wet days and snow on the ground from Coal Creek Canyon, CO. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 34° | 16° | 0.9" | 17.4" | 10 | 26 | 18° – 31° |
| February | 36° | 15° | 1.4" | 23.2" | 10 | 25 | 20° – 33° |
| March | 43° | 20° | 2.5" | 35.6" | 11 | 22 | 26° – 38° |
| April | 48° | 25° | 3.4" | 42.0" | 14 | 18 | 31° – 41° |
| May | 57° | 33° | 2.8" | 16.6" | 14 | 6 | 39° – 49° |
| June | 69° | 41° | 1.9" | 0.9" | 12 | 0 | 51° – 60° |
| July | 74° | 47° | 2.8" | 0.0" | 15 | 0 | 57° – 65° |
| August | 71° | 46° | 2.7" | 0.0" | 15 | 0 | 55° – 63° |
| September | 65° | 39° | 1.8" | 2.7" | 10 | 1 | 47° – 56° |
| October | 53° | 30° | 1.6" | 16.1" | 8 | 5 | 35° – 47° |
| November | 42° | 21° | 1.1" | 18.4" | 8 | 17 | 23° – 38° |
| December | 34° | 15° | 1.0" | 21.8" | 9 | 24 | 18° – 29° |
| Year | 52° | 29° | 23.9" | 194.7" | 136 | 143 |
How much a month can swing
A normal is an average. November swings the most: from 1991 to 2020 its average ranged from 23° to 38°. August is the most reliable, staying within 8°.
Where Blue Valley’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Blue Valley’s center.
- Snow: Coal Creek Canyon, CO.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Cabin Creek, CO, 12 miles from the town’s center, 510 ft higher; no station nearby passes every check; this is the nearest one in the same valley, flagged above.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Blue Valley’s climate
What is the weather like in Blue Valley?
A typical July afternoon reaches 74°, a January night drops to 16°, and about 195 inches of snow falls in a normal winter. Colder January nights than 81% of U.S. towns; cooler July afternoons than all but 163 U.S. towns.
How cold does it get in Blue Valley in winter?
December nights average 15°. About 234 nights a year reach 32° or below and 21 reach 0° or below. In the coldest December of the last 30 years the month averaged 18°.
How much snow does Blue Valley get?
About 195 inches in a normal winter at Coal Creek Canyon, CO, most of it in April, with snow on the ground about 143 days a year.
How hot does it get in Blue Valley?
July, with a typical high of 74°. 90° days are rare: none in a normal year at Cabin Creek, CO.
When is the first and last frost in Blue Valley?
In half of years the last spring frost (32°) comes by June 6 and the first fall frost by September 19, about 103 frost-free days, at Cabin Creek, CO.
What growing zone is Blue Valley in?
Zone 5b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −14°.
What is the best time of year to visit Blue Valley?
By one simple rule (highs of 62–84° and lows of 40° or more), June, July and August. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Blue Valley getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 51% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Blue Valley.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.