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Climate in West Brandywine Township · NOAA 1991–2020 normals

Wet weather: 49 inches of rain and melted snow a year in West Brandywine Township, more than in 79% of U.S. towns

On a normal January night the air cools to about 22°. September is the wettest month, February the driest. For walks and days out, the stretch from May to June and August to October brings highs of 65–83°.

More snow than 64% of U.S. towns#371Snowiest  of 993 in PA
Milder January nights than 50% of U.S. towns#281Mildest winters  of 1,005 in PA
All PA rankings →

A year in West Brandywine Township at a glance

Each month’s typical high and low, and what it brings.

Jan39°22° 8" snow
Feb42°23° 12" snow
Mar50°30° 6" snow
Apr63°40° Last frost ~Apr 11
May72°50° 1 day 90°+
Jun81°59° 2 days 90°+
Jul85°64° 9 days 90°+
Aug83°62° 3 days 90°+
Sep77°55° 2 days 90°+Wettest
Oct65°43°
Nov now53°34° First frost ~Nov 1
Dec44°27° 4" snow

What stands out about West Brandywine Township’s climate

Compared with towns across the U.S., with West Brandywine Township’s place in Pennsylvania beside it.

A normal year

What a year in West Brandywine Township feels like

Typical highs and lows by season and by month, from NOAA’s 30-year normals.

Winter
41° / 24°
8 days with 1"+ of snow
Spring
62° / 40°
Last frost around Apr 11
Summer
83° / 62°
16 days reach 90°
Fall
65° / 44°
First frost around Nov 1
Best months to be outsideMayJunAugSepOctHighs of 62–84° and lows of 40° or more
Frost, heat & the growing season

About 205 frost-free days a year

In half of years the last 32° night comes by April 11 and the first by November 1. Frost and day counts come from NOAA’s station at Glenmoore, PA, 5 miles from the town’s center, at about the same height.

Short record. NOAA estimated Glenmoore, PA’s counts from 8 years of data and its neighbors’, not a full 30-year record.
107
nights at or below 32° in a normal year
125th fewest of 1,005 in Pennsylvania
Fewer freezing nights than 56% of U.S. towns
1
nights at or below 0°
280th fewest of 1,005 in Pennsylvania
Fewer nights at or below 0° than 54% of U.S. towns
16
days that reach 90°
519th fewest of 1,005 in Pennsylvania
Fewer 90° days than 58% of U.S. towns
<1
days that reach 100°
369th fewest of 1,005 in Pennsylvania
Fewer 100° days than 68% of U.S. towns
7aUSDA zone
Plant hardiness zone 7a

The 2023 USDA map puts West Brandywine Township’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 3°. Plant labels use the zone; frost dates tell you when to plant.

Freezing nights by month

Average nights at or below 32°

26
JFMAMJJASOND

90° days by month

Average days at 90° or more

8.8
JFMAMJJASOND
Rain & snow

About 32 inches of snow a winter

Snow, measured at Coatesville 2 W, PA, falls mostly in February. Precipitation (rain plus melted snow) adds up to 49 inches a year; September is the wettest month and February the driest. Rain or snow falls on about 131 days a year.

49"
Rain + melted snow a year
141st wettest of 1,005 in Pennsylvania
Wetter than 79% of U.S. towns
32"
Snow in a normal winter
371st snowiest of 993 in Pennsylvania
More snow than 64% of U.S. towns
35 days
With 1"+ of snow on the ground
342nd most of 821 in Pennsylvania
More days with snow on the ground than 63% of U.S. towns

Rain + melted snow by month

Inches of water

4.9"
JFMAMJJASOND

Snowfall by month

Inches of snow

12"
JFMAMJJASOND
Heating & cooling

Heating and cooling a home in West Brandywine Township

86% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.

5,377 heating degree daysMore heating than 51% of U.S. towns
859 cooling degree daysLess cooling than 55% of U.S. towns

Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Glenmoore, PA.

Living here

Living with West Brandywine Township’s climate

What the numbers mean for a garden, a free afternoon and a bad-weather day.

The garden window

205 frost-free days in zone 7a. The last frost comes by Apr 11 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 1.

Get outside

Months with highs of 62–84° and lows of 40° or more: May, June, August, September and October. 5.4 miles of trails are waiting.

Parks & trails →
Storms and extremes

Of the yearly building losses FEMA expects in West Brandywine Township from natural hazards, river flooding is the largest share (57%); heat waves, cold waves, winter storms and ice storms together are 14%. Normals are averages; the hazards page covers the extremes.

Natural hazards →
Next door

West Brandywine Township and its neighbors

Every town next door is within a degree of West Brandywine Township in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.

Sadsbury Township: January low 22°, July high 85°West Sadsbury Township: January low 22°, July high 85°Salisbury Township: January low 22°, July high 85°Upper Uwchlan Township: January low 22°, July high 86°Uwchlan Township: January low 22°, July high 86°East Caln Township: January low 22°, July high 87°East Nantmeal Township: January low 22°, July high 86°West Nantmeal Township: January low 22°, July high 85°Coatesville: January low 22°, July high 86°Hayti: January low 22°, July high 85°Downingtown: January low 22°, July high 87°West Bradford Township: January low 22°, July high 86°East Fallowfield Township: January low 22°, July high 86°Thorndale: January low 22°, July high 86°Caernarvon Township: January low 22°, July high 85°Caernarvon Township: January low 22°, July high 85°West Caln Township: January low 22°, July high 85°East Brandywine Township: January low 22°, July high 86°Wallace Township: January low 22°, July high 85°Valley Township: January low 22°, July high 85°Caln Township: January low 22°, July high 86°Honey Brook Township: January low 22°, July high 84°West Brandywine Township: January low 22°, July high 85°West Brandywine TownshipWest Caln TownshipEast Brandywine TownshipWallace TownshipValley TownshipCaln TownshipHoney Brook Township
ColderMilder22° to 22°
Honey Brook Township21.5° about the same
West Caln Township21.7° about the same
West Brandywine Township21.8°
Wallace Township21.8° about the same
East Brandywine Township22.0° about the same
Caln Township22.0° about the same
Valley Township22.1° about the same

Climates most like West Brandywine Township’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.

TownJan. lowJuly highPrecip.Snow
West Brandywine Township, PA22°85°49"32"
Fairfield, CT22°84°49"34"
New Martinsville, WV22°85°46"27"
Elsmere, KY23°85°47"23"
Delhi Hills, OH23°86°46"23"

Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.

Then and now

Warmer than it used to be

The last 30 years in West Brandywine Township averaged 1.8° warmer than the 1900s. The biggest change is in December (+3.4°).

+1.8°1991–2020 vs. 1901–2000

A bigger shift than in 82% of U.S. towns.

Winter+2.8°now 33°, was 30°
Spring+1.5°now 51°, was 49°
Summer+1.6°now 72°, was 71°
Fall+1.5°now 55°, was 53°

Change by month

JanFebMarAprMayJunJulAugSepOctNovDec

The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.

Compared with other towns

How West Brandywine Township compares

Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with West Brandywine Township’s place among Pennsylvania’s.

Summer heat85° July high
Hotter July afternoons than 51% of U.S. towns384th hottest of 1,005 in Pennsylvania
Winter cold22° January low
Milder January nights than 50% of U.S. towns281st mildest of 1,005 in Pennsylvania
Precipitation49" a year
Wetter than 79% of U.S. towns141st wettest of 1,005 in Pennsylvania
Snow32" a winter
More snow than 64% of U.S. towns371st snowiest of 993 in Pennsylvania
Hot days16 days at 90°+
Fewer 90° days than 58% of U.S. towns519th fewest of 1,005 in Pennsylvania
Freezing nights107 a year
Fewer freezing nights than 56% of U.S. towns125th fewest of 1,005 in Pennsylvania
Growing season205 frost-free days
A longer frost-free season than 71% of U.S. towns68th longest of 1,005 in Pennsylvania
Month by month

West Brandywine Township weather by month

Highs, lows and precipitation from NOAA’s grid at West Brandywine Township’s center; snow, wet days and snow on the ground from Coatesville 2 W, PA. 1991–2020 normals.

MonthHighLowRain + meltSnowWet daysSnow on ground30-yr range
January39°22°3.5"7.9"121122° – 38°
February42°23°2.8"11.5"101322° – 40°
March50°30°4.2"6.3"12535° – 49°
April63°40°3.8"1.1"12047° – 56°
May72°50°3.8"0.0"11057° – 67°
June81°59°4.5"0.0"11066° – 73°
July85°64°4.7"0.0"11071° – 78°
August83°62°4.4"0.0"10069° – 76°
September77°55°4.9"0.0"10063° – 70°
October65°43°4.5"0.0"9050° – 61°
November53°34°3.4"0.7"10138° – 48°
December44°27°4.2"4.4"11627° – 47°
Year63°43°48.6"31.9"13135
Year to year

How much a month can swing

A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 27° to 47°. September is the most reliable, staying within 6°.

Coldest to warmest month in 30 yearsNormal
Sources

Where West Brandywine Township’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 West Brandywine Township’s center.
  • Snow: Coatesville 2 W, PA.
  • Frost, freezing nights, 90° and 100° days, heating and cooling: Glenmoore, PA, 5 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
  • 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 West Brandywine Township’s climate

What is the weather like in West Brandywine Township?

A typical July afternoon reaches 85°, a January night drops to 22°, and about 32 inches of snow falls in a normal winter. Milder January nights than 50% of U.S. towns; hotter July afternoons than 51% of U.S. towns.

How cold does it get in West Brandywine Township in winter?

January nights average 22°. About 107 nights a year reach 32° or below and 1 reach 0° or below. In the coldest January of the last 30 years the month averaged 22°.

How much snow does West Brandywine Township get?

About 32 inches in a normal winter at Coatesville 2 W, PA, most of it in February, with snow on the ground about 35 days a year.

How hot does it get in West Brandywine Township?

July, with a typical high of 85° and a low of 64°. About 16 days a year reach 90° (Glenmoore, PA).

When is the first and last frost in West Brandywine Township?

In half of years the last spring frost (32°) comes by April 11 and the first fall frost by November 1, about 205 frost-free days, at Glenmoore, PA.

What growing zone is West Brandywine Township in?

Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 3°.

What is the best time of year to visit West Brandywine Township?

By one simple rule (highs of 62–84° and lows of 40° or more), May, June, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.

Is West Brandywine Township getting warmer?

Yes: 1991–2020 averaged 1.8° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 82% of U.S. towns.

Neighbors talk weather

Gardens, snow, and the best days of the year in West Brandywine Township.

Town Square →
Ask your neighbors

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.