Clifton Heights, Pennsylvania Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Clifton Heights weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast35%—102°77°—
- SundayJul 5Rain87%0.48″97°71°-5°
- MondayJul 6T-storm w/ Hail87%0.28″80°66°-17°
- TuesdayJul 7Light Drizzle72%0.01″68°63°-12°
- WednesdayJul 8Partly Cloudy16%—85°59°+17°
- ThursdayJul 9Mostly Clear28%—91°66°+6°
- FridayJul 10Light Drizzle34%0.01″93°71°+2°
AQI 63 (Moderate), driven by PM2.5. AQI up 7 over the last 6 hours (gradual rise). PM2.5 at 22.3 µg/m³ (AQI 76) with a 0.91 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 6 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 35 now. With UV 1.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 8 around 1 PM.
- Present
- AQI 35
- UV peak
- 1.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 8
PM × Wind × Precip
PM2.5 at 22.3 µg/m³ (AQI 76) with a 0.91 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.91
- 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
- 10:05 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Clifton Heights at a glance
- Today vs. normal: 9°F above the seasonal normal for this latitude
- Last frost: April 16 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 19018
16-Day Forecast — Clifton Heights
- Sat102°77°35%
- Sun97°71°87%
- Mon80°66°87%
- Tue68°63°72%
- Wed85°59°16%
- Thu91°66°28%
- Fri93°71°34%
- Sat84°72°34%
- Sun75°68°32%
- Mon72°67°17%
- Tue85°66°17%
- Wed91°68°24%
- Thu95°73°23%
- Fri96°77°34%
- Sat83°71°39%
- Sun89°70°35%
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 — Clifton Heights
SPC has placed Clifton Heights in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWSLGTSlight Risk
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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
The year in Clifton Heights tops out in July (~77°F) and dips lowest in January (~31°F), with December wettest at 4.2 inches and February driest at 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
By the nearest station's NOAA NCEI 1991-2020 normals, Clifton Heights sees 31°F Januarys and 77°F Julys, a 46°F range, plus around 43.1 inches of precipitation across 173 days.
Clifton Heights's precipitation spreads evenly: December peaks at 4.2 inches on 13.0 wet days, while February holds 2.9 inches over 12.4 — no month dominates Clifton Heights's rain calendar. That lines Clifton Heights up with places like Aldan, PA, Lansdowne, PA and Drexel Hill, PA, fed by overlapping storm tracks.
Clifton Heights's growing window opens around mid-April, once Clifton Heights's overnight lows stop freezing — sow peas, lettuce, spinach, and radishes. Hold Clifton Heights's tender crops — tomatoes, peppers, basil — until 10-14 days past Clifton Heights's last frost. Clifton Heights's window closes around mid-November as overnight lows return below freezing. Within Clifton Heights, cold-air pooling chills low spots by 5-10°F, shifting Clifton Heights's local frost dates.
Similar climates: Aldan, PA, Lansdowne, PA, Drexel Hill, PA, Collingdale, PA, Darby, PA.
Frequently asked
- When does it freeze in Clifton Heights?
- In Clifton Heights, expect the last spring frost near mid-April; Clifton Heights's first autumn frost comes around mid-November.
- What is the rainy season in Clifton Heights?
- Rainfall in Clifton Heights peaks in December near 4.2 inches, out of about 43 inches annually.
- What is the warmest month in Clifton Heights?
- The warmest stretch in Clifton Heights comes in July, around 77°F on average.
- What is the coldest month in Clifton Heights?
- On average January is the chilliest month in Clifton Heights, about 31°F.
- When can I start a vegetable garden in Clifton Heights?
- Frost-hardy sowings begin at mid-April in Clifton Heights; warm-season starts follow two weeks on.
- How many rainy days does Clifton Heights get?
- Expect roughly 173 wet days a year in Clifton Heights.
- What hardiness zone is Clifton Heights?
- Clifton Heights sits in the USDA zone set by January lows near 31°F; the USDA ZIP tool gives the band.
- What is the 10-day forecast for Clifton Heights?
- Clifton Heights'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 Clifton Heights?
- See this week's day-by-day rain chances for Clifton Heights in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Clifton Heights?
- Current conditions for Clifton Heights and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Clifton Heights forecast updated?
- The Clifton Heights forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Clifton Heights?
- Today's sunrise and sunset times for Clifton Heights 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 Clifton Heights?
- The next few days in Clifton Heights's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Clifton Heights, Pennsylvania has a warm-summer humid continental climate: January averages roughly 31°F, July about 77°F, 46°F between them.
Yearly precipitation in Clifton Heights totals around 43 inches, spread over about 173 days of rain or snow.
At 39.9°N, Clifton Heights's 46°F summer-to-winter swing sets when Clifton Heights's gardens wake and when frost returns.
ZIP codes in Clifton Heights
- 19018