Frost Dates for Byers, CO

Based on data from Byers 5 Ene weather station, 6 miles away

Elevation: 5203 ft

Frost Dates

Last Spring Frost (50%) iA 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. May 13
First Fall Frost (50%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. October 2
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.

Last Spring Frost May 18
First Fall Frost September 28

Hard Freeze (28°F)

Last Spring Hard Freeze May 2
First Fall Hard Freeze October 10
39.71°N, -104.23°W © OpenStreetMap

Growing Season

142 Days May 13 to October 2

USDA Hardiness Zone iHardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.

Zone 5a

Avg. annual minimum: −20 to −15°F (−29 to −26°C)

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

BSk Cold Semi-Arid (Steppe)

Cool to cold with low rainfall and wide temperature swings. Common in the western Great Plains and central Asia. Short growing seasons benefit from season extension techniques.

Köppen climate map

Temperature

10° 30° 50° 70° 90°
28°
High: 42°F
Avg: 28°F
Low: 14°F
Jan
30°
High: 45°F
Avg: 30°F
Low: 16°F
Feb
40°
High: 54°F
Avg: 40°F
Low: 25°F
Mar
46°
High: 61°F
Avg: 46°F
Low: 32°F
Apr
56°
High: 71°F
Avg: 56°F
Low: 42°F
May
67°
High: 83°F
Avg: 67°F
Low: 51°F
Jun
74°
High: 90°F
Avg: 74°F
Low: 57°F
Jul
71°
High: 87°F
Avg: 71°F
Low: 56°F
Aug
63°
High: 79°F
Avg: 63°F
Low: 47°F
Sep
49°
High: 65°F
Avg: 49°F
Low: 33°F
Oct
37°
High: 53°F
Avg: 37°F
Low: 22°F
Nov
28°
High: 43°F
Avg: 28°F
Low: 14°F
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 1" 2" 3" 3.9"
2.4"
2.43"
Jan
2.1"
2.13"
Feb
3.4"
3.36"
Mar
3.9"
3.89"
Apr
3.8"
3.80"
May
3.2"
3.19"
Jun
3.7"
3.69"
Jul
3.6"
3.57"
Aug
3.3"
3.30"
Sep
3.4"
3.41"
Oct
3.0"
2.99"
Nov
2.5"
2.49"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9.5h10.5h11.5h13h14h15h14.5h13.5h12h11h10h9h
Jan: 7:21 AM – 4:50 PM · 9h 29m
Feb: 6:56 AM – 5:26 PM · 10h 29m
Mar: 7:16 AM – 6:57 PM · 11h 41m
Apr: 6:25 AM – 7:28 PM · 13h 03m
May: 5:47 AM – 7:58 PM · 14h 11m
Jun: 5:33 AM – 8:21 PM · 14h 48m
Jul: 5:46 AM – 8:19 PM · 14h 33m
Aug: 6:14 AM – 7:48 PM · 13h 34m
Sep: 6:44 AM – 6:58 PM · 12h 15m
Oct: 7:14 AM – 6:09 PM · 10h 55m
Nov: 6:49 AM – 4:35 PM · 9h 46m
Dec: 7:16 AM – 4:28 PM · 9h 12m
Daylight Mountain Time (MT) Longest: 14h 49m · Shortest: 9h 11m

Nearby Stations

Denver Intl AP, CO May 5 - October 9 Lindon 5 Wnw, CO May 15 - October 2 Elizabeth 2nw, CO May 16 - October 2 Parker, COMay 9 - October 3 Woodrow 6nne, CO May 15 - October 1 Ft Morgan, COMay 6 - October 6

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