Collingdale, Pennsylvania Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Collingdale weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast40%—99°79°—
- SundayJul 5Heavy Rain49%5.2″93°73°-6°
- MondayJul 6Heavy Showers94%0.71″77°72°-16°
- TuesdayJul 7Light Showers81%—81°69°+4°
- WednesdayJul 8Light Drizzle29%—81°67°0°
- ThursdayJul 9Overcast11%—92°69°+11°
- FridayJul 10Light Drizzle42%—91°73°-1°
AQI 125 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 58 in the last 6 hours — air quality is degrading. Ozone at AQI 93 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 93 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 93
- UV peak
- 0.7 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 93
PM × Wind × Precip
PM2.5 at 8.8 µg/m³ (AQI 49) with a 0.95 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.95
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:54 PM
- Moonset
- 10:04 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Collingdale at a glance
- Today vs. normal: 27°F above the seasonal normal for this latitude
- Last frost: April 15 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Collingdale
- Sat99°79°40%
- Sun93°73°49%
- Mon77°72°94%
- Tue81°69°81%
- Wed81°67°29%
- Thu92°69°11%
- Fri91°73°42%
- Sat90°74°37%
- Sun85°72°29%
- Mon81°71°20%
- Tue88°69°17%
- Wed92°70°41%
- Thu91°73°41%
- Fri95°76°35%
- Sat94°74°29%
- Sun91°75°39%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Collingdale
SPC has placed Collingdale in the Enhanced Risk category for severe thunderstorms today.
- TODAYENHEnhanced Risk
- TOMORROWSLGTSlight Risk
- DAY 3TSTMGeneral Thunderstorms
Numerous severe storms likely. Tornadoes, large hail, and damaging wind gusts possible across the area. Track NWS warnings if storms develop.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Microseason · July 1–5
Cicadas claim the afternoon
Annual cicada buzz begins, peaking in the heat of the day.
Day 185 of 365 · Wedge 37 of 72
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
In Collingdale, July runs warmest near 77°F and January coldest around 31°F, while December is the wettest month (4.2 inches) and February the driest (2.9 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 31° | 3.4″ | 13 |
| February | 33° | 2.9″ | 12 |
| March | 42° | 3.7″ | 15 |
| April | 53° | 3.9″ | 17 |
| May | 61° | 3.7″ | 17 |
| June | 71° | 3.7″ | 17 |
| July | 77° | 3.3″ | 16 |
| August | 75° | 4.0″ | 17 |
| September | 69° | 3.7″ | 13 |
| October | 58° | 3.0″ | 11 |
| November | 45° | 3.6″ | 13 |
| December | 36° | 4.2″ | 13 |
Regional context
Collingdale swings from 31°F in January to 77°F in July (46°F) per NOAA NCEI 1991-2020 normals; precipitation in Collingdale runs about 43.1 inches on roughly 173 measurable days.
No season owns Collingdale's rain: December reaches 4.2 inches across 13.0 days and February keeps 2.9 inches on 12.4, an even spread through Collingdale's year. That lines Collingdale up with places like Sharon Hill, PA, Aldan, PA and Darby, PA, fed by overlapping storm tracks.
Collingdale reaches its last hard frost near mid-April; that is the cue for peas, lettuce, spinach, and radishes. Collingdale's heat-lovers — tomatoes, peppers, squash — hold off until Collingdale's frost risk clears, 10-14 days on. The season ends by mid-November in Collingdale, once hard frosts set back in. Collingdale's low ground holds frost later into spring than Collingdale's benches, which run 3-5 days ahead.
Similar climates: Sharon Hill, PA, Aldan, PA, Darby, PA, Glenolden, PA, Colwyn, PA.
Frequently asked
- When does it freeze in Collingdale?
- Collingdale's last spring frost lands near mid-April, and in Collingdale the first fall frost follows around mid-November.
- What is the rainy season in Collingdale?
- Rainfall in Collingdale peaks in December near 4.2 inches, out of about 43 inches annually.
- What is the warmest month in Collingdale?
- On average July tops the year in Collingdale at about 77°F.
- What is the coldest month in Collingdale?
- The coldest stretch in Collingdale falls in January, around 31°F on average.
- When can I start a vegetable garden in Collingdale?
- Hardy spring crops go in near mid-April in Collingdale; tender peppers and squash wait 10–14 days.
- How many rainy days does Collingdale get?
- Collingdale averages about 173 days with measurable rain or snow each year.
- What hardiness zone is Collingdale?
- Because Collingdale bottoms near 31°F in January, that winter low sets Collingdale's USDA zone — verify by ZIP.
- What is the 10-day forecast for Collingdale?
- Collingdale's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Collingdale?
- See this week's day-by-day rain chances for Collingdale in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Collingdale?
- Current conditions for Collingdale and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Collingdale forecast updated?
- The Collingdale forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Collingdale?
- Today's sunrise and sunset times for Collingdale are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Collingdale?
- The next few days in Collingdale's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
The warm-summer humid continental climate of Collingdale, Pennsylvania carries typical Januarys near 31°F and Julys around 77°F — 46°F of seasonal travel.
Rain and snow bring Collingdale roughly 43 inches a year across approximately 173 measurable-precipitation days.
From 39.9°N, Collingdale sees a 46°F seasonal swing that governs Collingdale's planting and frost windows.
ZIP codes in Collingdale
- 19023