Deconstruct Sun

Montpelier, VT: Hardiness Zone 4b & Sunlight by Season

Montpelier is in USDA hardiness zone 4b. Here’s what that means for winter, plus sunrise, sunset, daylight hours and the sun’s path through the year.

Hardiness zone
4b
2023 USDA map
Coldest winter night (avg)
−25 to −20 °F
−31.7 to −28.9 °C
Longest day (Jun 21)
15h 31m
5:06 AM – 8:37 PM
Shortest day (Dec 21)
8h 51m
7:22 AM – 4:14 PM

Zone 4b in Montpelier

On the 2023 USDA Plant Hardiness Zone Map, Montpelier falls in zone 4b. That means the coldest night of a typical winter drops to between −25 and −20 °F. Perennials, shrubs and trees labeled for zone 4b or colder (a lower number) should survive the winter here. Parts of the area sit near the boundary with zone 5a, so a sheltered courtyard or an exposed hilltop can behave like the neighboring zone.

A zone only covers winter cold. For a plant to do well it also needs the right amount of sun, and that varies far more from one corner of a yard to the next than the zone does across town.

This is not the official USDA Plant Hardiness Zone Map. Zones are derived from the official 2023 dataset, resampled to about 2 km.

Nearby cities

All Vermont hardiness zones →

The sun over Montpelier

On the June solstice the sun rises in the northeast at 5:06 AM and climbs to 69° above the horizon at 12:52 PM. On the December solstice the noon sun reaches only 22°, so a 20-foot tree casts a noon shadow about 49 feet long. In June the same tree’s noon shadow is only 8 feet.

0°15°30°45°60°75°90°NNEESESSWWNWN
June solsticeMarch & September equinoxDecember solstice

Open the interactive sun calculator for Montpelier

Sunrise, sunset & daylight by month

DateSunriseSunsetDaylightNoon sun
Jan 217:18 AM4:45 PM9h 26m26°
Feb 216:40 AM5:27 PM10h 47m35°
Mar 216:51 AM7:04 PM12h 13m46°
Apr 215:56 AM7:42 PM13h 46m58°
May 215:17 AM8:17 PM15h 00m66°
Jun 215:06 AM8:37 PM15h 31m69°
Jul 215:26 AM8:26 PM15h 00m66°
Aug 216:00 AM7:45 PM13h 45m58°
Sep 216:36 AM6:49 PM12h 13m46°
Oct 217:12 AM5:56 PM10h 43m35°
Nov 216:53 AM4:18 PM9h 24m26°
Dec 217:22 AM4:14 PM8h 51m22°

Local time (New York), including daylight saving time. “Noon sun” is the sun’s height above the horizon at solar noon.

Daylight through the year

0h6h12h18h24hJanuary: 9h 26mJanFebruary: 10h 47mFebMarch: 12h 13mMarApril: 13h 46mAprMay: 15h 00mMayJune: 15h 31mJunJuly: 15h 00mJulAugust: 13h 45mAugSeptember: 12h 13mSepOctober: 10h 43mOctNovember: 9h 24mNovDecember: 8h 51mDec

What “full sun” means in Montpelier

Full sun is 6+ hours of direct sun. In Montpelier an open spot has 15.5 hours of daylight to work with in June and 8.8 in December, so a bed that clears 6 hours in summer can easily drop to part shade in winter once the low sun slips behind trees and houses.

Full sun6+ hoursof direct sun
Part sun4–6 hoursof direct sun
Part shade2–4 hoursof direct sun
Full shadeUnder 2 hoursof direct sun

Measure the sun in your Montpelier yard

Daylight is the ceiling. Deconstruct Sun traces the trees and buildings around one exact spot and tells you its real direct-sun hours, today and at every solstice and equinox.

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Questions

What hardiness zone is Montpelier, VT in?

Montpelier, Vermont is in USDA plant hardiness zone 4b on the 2023 map. The average coldest winter night is −25 to −20 °F (−31.7 to −28.9 °C). It is near the boundary with zone 5a.

How many hours of daylight does Montpelier get?

About 15.5 hours on the June solstice (sunrise 5:06 AM, sunset 8:37 PM) and 8.8 hours on the December solstice (sunrise 7:22 AM, sunset 4:14 PM). Around the equinoxes it is close to 12 hours.

How many hours of sun does my Montpelier yard get?

Up to the daylight hours above, minus whatever trees, buildings and fences block. In winter, when the sun stays low, that can be most of it. The Deconstruct Sun iPhone app measures the real direct-sun hours for one exact spot by having you trace what is around it.

When is the best time to plant in Montpelier?

Zone 4b tells you which perennials survive winter, not planting dates. For timing, use your local average frost dates from your county extension office, and choose plants rated for zone 4b or colder.

Source: USDA Plant Hardiness Zone Map, 2023. Agricultural Research Service, U.S. Department of Agriculture, planthardiness.ars.usda.gov. Underlying data © PRISM Group, Oregon State University, prism.oregonstate.edu, accessed 2026-08-30. Sun times calculated for 44.266, -72.572.