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Weather Conditions for Chatham, Pennsylvania : Chester County
Issued: Latitude: 39.8534419 Longitude: -75.8216087 View on Google Maps

Forecast Data
Current Conditions at
WILMINGTON - (KILG)
88°
Clear
as of 3:51 PM EDST
Rel. Humidity: 40%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 29.90 in.
Flight Rule: VFR
Wind Data
8 MPH
280° West
Cloud Level(s): Clear
Current Conditions at
PHILADELPHIA - (KPHL)
90°
Partly Cloudy
as of 3:54 PM EDST
Rel. Humidity: 31%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 29.89 in.
Flight Rule: VFR
Wind Data
10 MPH
Gust: 18 MPH
270° West
Cloud Level(s): Scattered at 6000ft, Scattered at 21000ft, Scattered at 35000ft
Current Conditions at
LANCASTER - (KLNS)
82°
Partly Cloudy
as of 3:53 PM EDST
Rel. Humidity: 54%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.92 in.
Flight Rule: VFR
Wind Data
12 MPH
270° West
Cloud Level(s): Scattered at 5500ft, Scattered at 10000ft
Current Radar Image


Sun Almanac for Chatham, Pennsylvania
Astronomical Sunrise 04:40 AM?Astronomical sunrise occurs when the Sun is 18° below the horizon and the sky begins to brighten from a completly darkened state.
Nautical Sunrise 05:16 AM?Nautical sunrise (or nautical dawn) is the precise moment when the sun's center is 12° below the horizon in the morning. It marks the beginning of nautical twilight, allowing pilots/mariners to see the horizon.
Civil Sunrise 05:51 AM?Civil sunrise is the moment in the morning when the sun's center is 6° below the horizon. It marks the start of morning civil twilight, providing enough natural light for most, outdoor activities without artificial lighting. It typically occurs roughly 20-30 minutes before actual sunrise.
Sunrise 06:19 AM?Sunrise (or sunup) is the moment when the upper rim of the Sun appears on the horizon in the morning. It marks the end of the twilight phase, often accompanied by distinct atmospheric colors.

Daylight: 13 Hours 35 Minutes?Daylight hours are the period of time between local sunrise and sunset, representing the daily portion of sunlight. These hours change in length based on season, Earth's tilt, and latitude.

Sunset 7:54 PM?The sunset is defined in astronomy as the moment the upper limb of the Sun disappears below the horizon. It marks the end of daylight and is often accompanied by distinct atmospheric colors. It also signals the beginning of twilight.
Civil Sunset 8:23 PM?Civil sunset (or evening civil twilight) occurs when the center of the sun is 6° below the horizon, marking the end of the brightest twilight phase. It typically occurs roughly 20-30 minutes after sunset, providing enough light for most outdoor activities to continue without artificial light.
Nautical Sunset 8:57 PM?Nautical sunset occurs when the sun's center is 12° below the horizon, marking the end of nautical twilight. This phase, following civil twilight, allows the horizon to remain visible, enabling mariners to take accurate star sights for navigation. The sky is dark, but some ambient light remains
Astronomical Sunset 9:34 PM?Astronomical sunrise occurs when the Sun drops to 18° below the horizon. This causes the sky to enter a completly darkened state.

Civil Rise to Set: 14 Hours 32 Minutes
Nautical Rise to Set: 15 Hours 41 Minutes
Astro Rise to Set: 16 Hours 54 Minutes

Click for yearly Sun Almanac for Chatham
Moon Almanac for Chatham, Pennsylvania
Moon Phase: First Quarter
Moon Illumination: 47%
Moon Age: 7.14 Days
Moon is currently above the horizon
Distance from Moon to Earth: 249,677 miles
Upcoming Lunar Events for
Chatham:
Next EventEvent TimeIllum

High Moon:06:35 pm Wed48.3%
First Quarter:10:46 pm Wed50.0%
Moonset:11:14 pm Wed50.2%
Moonrise:02:54 pm Thu56.5%
High Moon:07:25 pm Thu58.2%
Moonset:11:52 pm Thu60.0%
New Moon: Wed Aug 12
First Quarter: Wed Aug 19
Full Moon: Fri Aug 28
Last Quarter: Fri Sep 4
New Moon: Thu Sep 10
Click for Monthly Moon Almanac
Pennsylvania's Current Temperatures
Pennsylvania's Current Temperature Map


Pennsylvania's Satellite ImagePennsylvania Satellite Image

Pennsylvania's Current Wind DirectionPennsylvania's Current Wind Direction

National Summary
of upper and lower values of current conditions amongst 5226 locations
in the contiguous United States
High
Temp
109° Okmulgee Rgnl Arpt, Oklahoma
and 1 other location
Low
Temp
54° Berthoud Pass, Colorado
Wind
Speed
26mph Angel Fire, New Mexico
and 1 other location
Wind
Gust
38mph Berthoud Pass, Colorado
Heat
Index
118° Columbia/Marion, Mississippi
and 1 other location
High
Pressure
30.82Hg Salida Mountain, Colorado
Low
Pressure
29.81Hg Ogdensburg Intl, New York
# Locations Reporting Rain 34
# Locations Reporting Thunderstorms / Lightning 23
# Locations Reporting Fog 1
Average Temperature in the Contiguous USA 86°
Pennsylvania State Summary
of upper and lower values of current conditions amongst 43 locations
in Pennsylvania
High
Temp
90° Philadelphia
Low
Temp
72° Johnstown
and 2 other locations
Wind
Speed
14mph Johnstown
and 3 other locations
Wind
Gust
23mph Johnstown
High
Pressure
30.04Hg Somerset
Low
Pressure
29.89Hg Doylestown
and 3 other locations
Average temperature in Pennsylvania 80°
# Locations Reporting VFR
(Visual Flight Rules)
43
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.

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