Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated

Planting zone for 80469 — Phippsburg, CO

ZIP code 80469 (Phippsburg, Routt County) is in USDA zone 5a: the coldest winter night averages −20 to −15 °F. The median last spring frost is June 14 and the first fall frost September 11.

Where ZIP 80469 is

Outlined: the ZIP code area · tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

Zone5a−20 to −15 °F
Coldest night−28.9 to −26.1 °C
Last frostJun 14
First frostSep 11
2012 zone5a

Same zone as on the 2012 map. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 5a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Phippsburg, CO…

Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.

Frost dates in Phippsburg, CO

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostJune 14median — 50% chance of a later frost
Safe for tender plantsJune 28only 10% chance of frost after
First fall frostSeptember 11median — 10% chance by Aug 29
Growing season89 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 31 and returns around September 20.

From the NOAA station Yampa, CO — 5 miles away, elevation 7,858 ft. NOAA NCEI U.S. Climate Normals 1991–2020, 32 °F threshold. Low spots and valleys can freeze later in spring than the station.

When to plant vegetables in 80469

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · May 3 – May 17
SpinachSow outdoors · May 3 – May 24
Broccoli, cabbageStart indoors · Apr 5 – Apr 19
Broccoli, cabbageTransplant · May 24 – Jun 7
Onion setsPlant outdoors · May 17 – May 31
PotatoesPlant outdoors · May 24 – Jun 7
LettuceSow outdoors · May 17 – May 31
Carrots, beetsSow outdoors · May 24 – Jun 7
TomatoesStart indoors · Apr 19 – May 3
TomatoesTransplant · Jun 21 – Jul 5
Peppers, eggplantStart indoors · Apr 5 – Apr 19
Peppers, eggplantTransplant · Jun 28 – Jul 12
BeansSow outdoors · Jun 21 – Jul 5
Sweet cornSow outdoors · Jun 21 – Jul 5
Cucumbers, squashSow outdoors · Jun 21 – Jul 5
Fall lettuce, spinachSow outdoors · Jul 17 – Jul 31
GarlicPlant cloves · Aug 28 – Oct 2
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Jun 14) and first fall frost (Sep 11) with the rules of thumb U.S. extension services publish. Cool-season crops take a light frost; warm-season crops do best once the soil is above about 60 °F.

When spring arrived in 2026

In 2026, spring leaf-out near 80469 came on Apr 1 — 28 days earlier than the 1991–2020 average (Apr 29).

JanFebMarAprMayJun

The Spring Index marks the day when accumulated warmth is enough for lilac and honeysuckle to leaf out — a widely used signal that the growing season has started. Source: USA National Phenology Network, www.usanpn.org — Spring Indices, first leaf, 2026 (data as of 2026-09-08) and 30-year average 1991–2020 (CC BY 4.0).

Soil in Phippsburg, CO

The soil mapped at the center of ZIP 80469 is Rabbitears — loam, well drained.

TextureLoama good balance for most vegetables
pH6.8neutral; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter3%moderate
Hydrologic groupCwater soaks in slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Rabbitears-Inchau complex, 3 to 25 percent slopes.

Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 80469; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Phippsburg, CO

Summer high79 °Faverage high, July
Winter low7 °Faverage low, January
Hot days0days a year at 90 °F or more
Freezing nights222nights a year at 32 °F or less
Growing degree days1,206base 50 °F — the season’s usable heat
Longest day15 h 02 mindaylight on June 21
Shortest day9 h 18 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation16.9 inper year, rain and melted snow
Snowfall131 inper year; 144 days with snow on the ground

Average high and low, by month

0°10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 32 °F, low 7 °F 32°7° JanFebruary: average high 35 °F, low 9 °F 35°9° FebMarch: average high 43 °F, low 17 °F 43°17° MarApril: average high 52 °F, low 24 °F 52°24° AprMay: average high 62 °F, low 33 °F 62°33° MayJune: average high 74 °F, low 40 °F 74°40° JunJuly: average high 79 °F, low 47 °F 79°47° JulAugust: average high 78 °F, low 45 °F 78°45° AugSeptember: average high 70 °F, low 37 °F 70°37° SepOctober: average high 57 °F, low 27 °F 57°27° OctNovember: average high 42 °F, low 17 °F 42°17° NovDecember: average high 32 °F, low 8 °F 32°8° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″January: 1.37 in precipitation, 26.1 in snowfall 1.4❄26 JanFebruary: 1.29 in precipitation, 21.3 in snowfall 1.3❄21 FebMarch: 1.32 in precipitation, 16.8 in snowfall 1.3❄17 MarApril: 1.82 in precipitation, 15.5 in snowfall 1.8❄16 AprMay: 1.62 in precipitation, 4.7 in snowfall 1.6❄5 MayJune: 1.11 in precipitation, 0.5 in snowfall 1.1❄1 JunJuly: 1.62 in precipitation 1.6 JulAugust: 1.59 in precipitation 1.6 AugSeptember: 1.48 in precipitation, 0.6 in snowfall 1.5❄1 SepOctober: 1.26 in precipitation, 6.9 in snowfall 1.3❄7 OctNovember: 1.19 in precipitation, 17.4 in snowfall 1.2❄17 NovDecember: 1.27 in precipitation, 21.4 in snowfall 1.3❄21 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Yampa, CO (5 mi away); precipitation: Yampa, CO (5 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

5 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

804675a
Oak Creek, CO · 8 mi
804835a
Yampa, CO · 9 mi
804795a
Toponas, CO · 17 mi
804635b
Mc Coy, CO · 20 mi
804774b
Steamboat Springs, CO · 20 mi
804265b
Burns, CO · 23 mi
816375b
Gypsum, CO · 31 mi
804235b
Bond, CO · 34 mi

Colorado planting zones →

Questions about 80469

What planting zone is ZIP code 80469?

ZIP code 80469 (Phippsburg, CO) is in USDA hardiness zone 5a on the 2023 map: the coldest night of an average winter reaches −20 to −15 °F (−28.9 to −26.1 °C).

When is the last frost in Phippsburg, CO?

The median last spring frost (32 °F) near 80469 is June 14; after June 28 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Yampa station.

When is the first frost in Phippsburg, CO?

The median first fall frost near 80469 is September 11, giving a median frost-free growing season of 89 days.

When should I plant tomatoes in 80469?

Start tomato seeds indoors around Apr 19 – May 3 and set transplants outside around Jun 21 – Jul 5, one to three weeks after the median last frost.

How much rain and snow does 80469 get?

About 16.9 inches of precipitation a year and 131 inches of snowfall (NOAA 1991–2020 normals, Yampa station).

How hot do summers get in Phippsburg, CO?

The average high peaks at 79 °F in July, with about 0 days a year at 90 °F or more.

What kind of soil does 80469 have?

The USDA soil survey maps Rabbitears at the center of ZIP 80469: loam, well drained, pH about 6.8 (neutral).

Did spring come early in Phippsburg, CO in 2026?

Spring leaf-out near 80469 came on Apr 1 in 2026, 28 days earlier than the 1991–2020 average (Apr 29), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Phippsburg, CO?

Long-day onions: the longest day near 80469 is 15 h 02 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).