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Shaded-relief atlas plate of Horsham, Pennsylvania: rivers, roads, the city limits and where the water drains.
PENNSYLVANIA · MONTGOMERY COUNTY

Horsham

15,193 people, 300 ft above sea level in Montgomery County.

300 ftElevation, city center
15,193People, 2024 estimate
5 sq miLand area
Sunny 72°
Sunny now Dew point 58° · WNW 7 mph · high 70°
City of Horsham River Interstate 2 miles
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The Horsham plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.

MILE1
TODAY

Today in Horsham

NWS forecast and National Blend of Models · updated 4:00 PM EDT
RIGHT NOW Trenton-Mercer Airport (KTTN) · 4:53 PM
Sunny
72° Sunny Feels like 72° · high of 70° near 5 PM
WindWNW 7 mphno gusts
Humidity61%rising to 100% by morning
Pressure29.99 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 58° · Comfortableabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Rain
Friday40% chance · showers
LIKELY AMOUNT—amounts come within 3 days
LAST RAINSept. 271.4 in · 2 dry days
ALERTS & OUTLOOKS
No watches or warnings for Montgomery County
NWS Mount Holly and the Storm Prediction Center · checked 5:48 PM
SUN & MOON
↑ 6:54 AM6:47 PM ↓
11 h 52 m of daylight, 3 minutes less than yesterday
Waning gibbous, 88% lit. The Harvest Moon was full Saturday.
AIR & POLLEN
31
GOODAir quality index · fine particles
Tomorrow: 53, moderate. No pollen source yet.

The next three days, hour by hour

Sky: clear, cloudy, night Rain likely National Blend of Models
TUESDAY, SEPT. 29
WEDNESDAY, SEPT. 30
THURSDAY, OCT. 1
FRIDAY, OCT. 2
5p
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
2p
mostly cloudy day
partly cloudy night
mostly clear night
mostly clear night
partly cloudy night
partly cloudy day
partly cloudy day
partly cloudy day
partly cloudy day
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy day
mostly cloudy day
partly cloudy day
mostly sunny
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy day
partly cloudy day
partly cloudy day
TEMPERATURE °F
70°
56°
77°
63°
78°
65°
CHANCE OF RAIN
50%
WIND, MPH
3
2
0
0
0
0
1
5
0
3
5
5
5
5
6
7
7
6
7
7
7
7
9
10
HOW IT FEELS · DEW POINT
Sticky: dew points 56 to 65°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 72° / 53°
TUE Sept. 29 Mostly cloudy Mostly cloudy
70° 56°
0% rain — WNW 3 A
WED Sept. 30 Partly cloudy Partly cloudy
77° 61°
0% rain — W 2 A
THU Oct. 1 Partly cloudy Partly cloudy
78° 64°
0% rain — SW 6 B
FRI Oct. 2 Chance of showers Chance of showers
82° 60°
40% rain up to 0.1″ W 9 B
SAT Oct. 3 Partly cloudy; cooler Partly cloudy; cooler
70° 54°
30% rain — E 5 B
SUN Oct. 4 Chance of showers Chance of showers
66° 53°
40% rain up to 1.0″ E 6 B
MON Oct. 5 Mostly sunny Mostly sunny
66° 45°
10% rain — NNW 9 C
How sure are we? AModels agree: highs within 4° BSome spread: within 8° CWide spread: check back
Range from the National Blend of Models percentiles · graded on Forecast Scores
AIR MAIL

Where today’s air came from

The air arriving over Horsham about 5,000 feet above the ground was over the western Atlantic three days ago, and over the Great Lakes a day ago, about 1,500 miles back along its path. It rose from near the ground on the way. Near the ground the air came from the Maritimes; at 10,000 feet, from the Atlantic off the Carolinas. Traced back 72 hours through NOAA’s hourly RAP analyses and the GFS beyond them, nine paths at each of three heights.

MILE7
ON THE NETWORK

Around Horsham on the Forecast Network

Neighboring plates

Philadelphia PA · 12 MI 12 miles south Allentown PA · 34 MI 34 miles northwest New York NY · 71 MI 71 miles northeast Hempstead NY · 86 MI 86 miles east Baltimore MD · 99 MI 99 miles southwest Washington DC · 134 MI 134 miles southwest
FORECASTCITY
Atlas plate of Horsham, Pennsylvania. Explore the plate
PENNSYLVANIA · MONTGOMERY

Horsham

15,193 people, 300 ft above sea level in Montgomery County.

300 ftElevation
15,193People
5 sq miLand
Sunny 72°
SunnyDew point 58°
1

Today in Horsham

NEXT 15 HOURS
Now mostly cloudy day 70° 0%
8p partly cloudy night 65° 0%
11p mostly clear night 62° 0%
2a mostly clear night 59° 0%
5a partly cloudy night 57° 0%
8a partly cloudy day 58° 0%
Rain
NEXT RAINFriday · 40%
→
Tue0%
Mostly cloudy Mostly cloudy
56
70
A
Wed0%
Partly cloudy Partly cloudy
61
77
A
Thu0%
Partly cloudy Partly cloudy
64
78
B
Fri40%
Chance of showers Chance of showers
60
82
B
Sat30%
Partly cloudy; cooler Partly cloudy; cooler
54
70
B
Sun40%
Chance of showers Chance of showers
53
66
B
Mon10%
Mostly sunny Mostly sunny
45
66
C
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
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