The best times to visit Coatesville for ideal weather are

April 30th to July 1st

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Coatesville Travel Info

Weather in Coatesville


Average temperatures in Coatesville vary drastically. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 30th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Coatesville, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 84.8°F (29.3°C) with temperatures rarely dropping below 67.8°F (19.9°C) at night.

Coatesville Temperatures (Fahrenheit)


Coatesville Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Coatesville Perceived Temperature (F)


Coatesville Perceived Temperature (C)



Average Coatesville Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 37.1 30.3 24.4
Feb 39.2 31.9 25.7
Mar 50.2 40.8 33.8
Apr 63 52.3 43.4
May 73.1 63 54.4
Jun 79.4 70.4 62
Jul 83.6 74.6 66.4
Aug 80.4 71.6 63.7
Sep 74.8 65.8 58.1
Oct 62.9 54.3 47
Nov 52.4 44.5 37.9
Dec 43.7 37.2 31.6

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 2.8 -0.9 -4.2
Feb 4 -0.1 -3.5
Mar 10.1 4.9 1
Apr 17.2 11.3 6.3
May 22.8 17.2 12.4
Jun 26.3 21.3 16.7
Jul 28.7 23.7 19.1
Aug 26.9 22 17.6
Sep 23.8 18.8 14.5
Oct 17.2 12.4 8.3
Nov 11.3 6.9 3.3
Dec 6.5 2.9 -0.2



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Coatesville are September, November, and then January. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid to late September. For example, on the week of September 17th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid July with an average of 2 days of significant precipitation the week of July 9th.

When can you find snow in Coatesville? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Coatesville.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Coatesville (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 19% 0 3
Feb 19% 0 2.9
Mar 23% 0 4
Apr 21% 0 3.7
May 23% 0 3.7
Jun 25% 0 4.7
Jul 21% 0 4
Aug 19% 0 4.6
Sep 16% 0 3.9
Oct 20% 0 5.5
Nov 17% 0 2.6
Dec 24% 0 4.7

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 19 0 7.6
Feb 19 0 7.4
Mar 23 0 10.2
Apr 21 0 9.4
May 23 0 9.4
Jun 25 0 11.9
Jul 21 0 10.2
Aug 19 0 11.7
Sep 16 0 9.9
Oct 20 0 14
Nov 17 0 6.6
Dec 24 0 11.9


Humidity and Wind

Coatesville has some very humid months, with other comfortably humid months. The least humid month is April (54.1% relative humidity), and the most humid month is September (71.5%).

Wind in Coatesville is usually calm. The windiest month is February, followed by March and January. February’s average wind speed of around 7 knots (8 MPH or 12.9 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid February where average top sustained speeds reach 16.3 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Coatesville.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 6.5 Light breeze 14 Significant breeze
Feb 7 Gentle breeze 15.1 Significant breeze
Mar 6.8 Light breeze 13.9 Significant breeze
Apr 6.5 Light breeze 14 Significant breeze
May 4.8 Light breeze 11.4 Significant breeze
Jun 4.2 Light breeze 10.8 Gentle breeze
Jul 3.5 Barely noticeable 9.6 Significant breeze
Aug 3.5 Barely noticeable 9 Gentle breeze
Sep 3.9 Barely noticeable 9.7 Significant breeze
Oct 5.2 Light breeze 11.7 Significant breeze
Nov 5.6 Light breeze 12.1 Significant breeze
Dec 6.3 Light breeze 13.5 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 59.1%
Feb 58.5%
Mar 55.7%
Apr 54.1%
May 67.4%
Jun 70.1%
Jul 69.8%
Aug 71%
Sep 71.5%
Oct 68.6%
Nov 62.5%
Dec 70.1%


Is it Safe to Travel to Coatesville?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 23, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Coatesville, PA, US is July, followed by August and June. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Coatesville in November. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is somewhat extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 31.4 in November means 31.4% of the tourists vs. July.



Overall Coatesville Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 78.2°F (25.7°C) and 40.8°F (4.9°C) with far warmer temperatures in the later months. Rain is somewhat common with 6 to 7 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see moderate precipitation with 6 to 7 days of precipitation per month. June – August is the busiest season for tourism in Coatesville, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 79°F (26.1°C) and 48.4°F (9.1°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 5 to 6 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is far too cold this time of year in Coatesville to be enjoyable for warm weather travelers. The average high during this season is between 44°F (6.7°C) and 34.2°F (1.2°C). On average, it rains or snows a fair amount: 5 to 7 times per month. These times of year are fairly slow with tourists.


Best Times to Travelthe United States › Coatesville, PA, US