The best times to visit Glen Mills for ideal weather are

April 23rd to June 17th

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



Other Glen Mills Travel Info

Weather in Glen Mills


Average temperatures in Glen Mills 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 21st 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 Glen Mills, 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 91.4°F (33°C) with temperatures rarely dropping below 70.8°F (21.6°C) at night.

Glen Mills Temperatures (Fahrenheit)


Glen Mills 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.

Glen Mills Perceived Temperature (F)


Glen Mills Perceived Temperature (C)



Average Glen Mills 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 43.1 33.6 24.8
Feb 44.3 34.1 24.8
Mar 56.1 43.8 33.3
Apr 68 55.2 43.6
May 78.4 65.8 54.7
Jun 85.9 74.4 64.3
Jul 90.1 79.2 69.7
Aug 86.9 76.6 67.2
Sep 81.7 70.6 61.2
Oct 70.1 59.1 49.8
Nov 58.1 47.8 38.5
Dec 49.8 40.5 32.3

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 6.2 0.9 -4
Feb 6.8 1.2 -4
Mar 13.4 6.6 0.7
Apr 20 12.9 6.4
May 25.8 18.8 12.6
Jun 29.9 23.6 17.9
Jul 32.3 26.2 20.9
Aug 30.5 24.8 19.6
Sep 27.6 21.4 16.2
Oct 21.2 15.1 9.9
Nov 14.5 8.8 3.6
Dec 9.9 4.7 0.2



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Glen Mills are September, January, and then July. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early July. For example, on the week of July 2nd there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in early June with an average of 2 days of significant precipitation the week of June 4th.

When can you find snow in Glen Mills? Weather stations report large amounts of snow likely to be deepest around December, especially close to mid December. The best time to ski (if at all) in Glen Mills is often around around December 17th when fresh powder is deepest. 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 Glen Mills.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Glen Mills (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% 4.1 3.1
Feb 23% 5.2 2.8
Mar 22% 3.4 4
Apr 23% 0 4.1
May 23% 0 3.5
Jun 27% 0 5
Jul 19% 0 4.7
Aug 21% 0 6.2
Sep 18% 0 4.3
Oct 22% 0 4
Nov 20% 0 2.6
Dec 28% 7 5.3

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 19 10.4 7.9
Feb 23 13.2 7.1
Mar 22 8.6 10.2
Apr 23 0 10.4
May 23 0 8.9
Jun 27 0 12.7
Jul 19 0 11.9
Aug 21 0 15.7
Sep 18 0 10.9
Oct 22 0 10.2
Nov 20 0 6.6
Dec 28 17.8 13.5


Humidity and Wind

Glen Mills has some comfortably humid months, with slightly drier months on the other side of the year. The least humid month is April (44% relative humidity), and the most humid month is September (56.5%).

Wind in Glen Mills is usually moderate. The windiest month is February, followed by March and April. February’s average wind speed of around 9.1 knots (10.5 MPH or 16.8 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 mid February where average top sustained speeds reach 17.6 knots, which is considered a fresh breeze.

Relative Humidity (%)

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

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 8.5 Gentle breeze 15.5 Significant breeze
Feb 9.1 Gentle breeze 16.7 Significant breeze
Mar 9 Gentle breeze 16.2 Significant breeze
Apr 8.9 Gentle breeze 16.3 Significant breeze
May 7.4 Gentle breeze 14.2 Significant breeze
Jun 7.2 Gentle breeze 14.5 Significant breeze
Jul 6.9 Light breeze 14.2 Significant breeze
Aug 6.3 Light breeze 12.8 Significant breeze
Sep 6.6 Light breeze 12.6 Significant breeze
Oct 7.7 Gentle breeze 14.1 Significant breeze
Nov 7.7 Gentle breeze 14.1 Significant breeze
Dec 8.2 Gentle breeze 15.1 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 47.5%
Feb 45.4%
Mar 44.2%
Apr 44%
May 52.1%
Jun 53.8%
Jul 52.2%
Aug 55.2%
Sep 56.5%
Oct 55.9%
Nov 51.6%
Dec 55.4%


Is it Safe to Travel to Glen Mills?

Our best data indicates this area is generally safe. As of Dec 04, 2023 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 Dec 04, 2023.


The Busiest and Least Crowded Months

The busiest month for tourism in Glen Mills, 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 Glen Mills 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 Glen Mills Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 85.6°F (29.8°C) and 47.3°F (8.5°C) with far warmer temperatures in the later months. Rain is somewhat common with roughly 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 quite warm. These months see moderate precipitation with 6 to 8 days of precipitation per month. June – August is the busiest season for tourism in Glen Mills, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 86.2°F (30.1°C) and 53.3°F (11.8°C), which will feel comfortable given the humidity and wind. It rains or snows a significant amount: 5 to 7 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 too cold this time of year in Glen Mills to be enjoyable for warm weather travelers. The average high during this season is between 50.5°F (10.3°C) and 39.5°F (4.2°C). On average, it rains or snows a fair amount: 6 to 9 times per month. These times of year are fairly slow with tourists.


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