FORECAST CITY
Sign in
Shaded-relief atlas plate of Halfmoon, Pennsylvania: rivers, roads, the city limits and where the water drains.
PENNSYLVANIA · CENTRE COUNTY

Halfmoon

2,852 people, 1,380 ft above sea level in Centre County.

1,380 ftElevation, city center
2,852People, 2024 estimate
24 sq miLand area
Sunny 68°
Sunny now Dew point 61° · NNW 3 mph · high 69°
City of Halfmoon River Interstate 2 miles
Explore the plate Order a print

The Halfmoon 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 Halfmoon

NWS forecast and National Blend of Models · updated 4:00 PM EDT
RIGHT NOW State College Regional Airport (KUNV) · 4:53 PM
Sunny
68° Sunny Feels like 68° · high of 69° near 5 PM
WindNNW 3 mphno gusts
Humidity78%rising to 100% by morning
Pressure30.06 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 61° · Stickyabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Mostly cloudy
Friday, about 3 PMin about 69 hours · 63% chance · rain
LIKELY AMOUNT0–0.2 inmost likely 0.02; 1 in 10 over 0.6
LAST RAINSept. 280.15 in · 1 dry day
ALERTS & OUTLOOKS
No watches or warnings for Centre County
NWS State College and the Storm Prediction Center · checked 5:48 PM
SUN & MOON
↑ 7:06 AM6:58 PM ↓
11 h 52 m of daylight, 3 minutes less than yesterday
Waning gibbous, 88% lit. The Harvest Moon was full Saturday.
AIR & POLLEN
26
GOODAir quality index · ozone
Tomorrow: 37, good. 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
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy day
partly cloudy day
partly cloudy day
mostly cloudy day
mostly cloudy night
mostly cloudy night
overcast
mostly cloudy night
mostly cloudy day
partly cloudy day
mostly sunny
partly cloudy day
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy day
partly cloudy day
rain
TEMPERATURE °F
69°
55°
75°
60°
77°
64°
CHANCE OF RAIN
63% · 0.00 in Friday afternoon 50%
WIND, MPH
2
0
0
0
0
0
5
6
3
2
1
0
1
2
6
8
7
7
5
5
6
7
9
12
HOW IT FEELS · DEW POINT
Sticky: dew points 55 to 66°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 80° / 62°
TUE Sept. 29 Mostly cloudy Mostly cloudy
69° 55°
0% rain — W 2 A
WED Sept. 30 Partly cloudy Partly cloudy
75° 60°
10% rain — SSW 3 A
THU Oct. 1 Partly cloudy Partly cloudy
78° 63°
10% rain — SW 5 B
FRI Oct. 2 Showers likely Showers likely
77° 49°
60% rain up to 0.2″ NW 12 C
SAT Oct. 3 Partly cloudy; cooler Partly cloudy; cooler
67° 46°
20% rain — E 5 B
SUN Oct. 4 Chance of showers Chance of showers
64° 47°
40% rain up to 0.4″ SW 6 C
MON Oct. 5 Mostly sunny Mostly sunny
63° 39°
0% rain — NW 10 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 Halfmoon about 5,000 feet above the ground was over the western Atlantic three days ago, and over the Great Lakes a day ago, about 1,340 miles back along its path. Near the ground the air came from the North Atlantic; 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 Halfmoon on the Forecast Network

Neighboring plates

State College PA · 9 MI 9 miles east Altoona PA · 27 MI 27 miles southwest Baltimore MD · 126 MI 126 miles southeast Washington DC · 140 MI 140 miles south Philadelphia PA · 161 MI 161 miles east Cleveland OH · 197 MI 197 miles west
FORECASTCITY
Atlas plate of Halfmoon, Pennsylvania. Explore the plate
PENNSYLVANIA · CENTRE

Halfmoon

2,852 people, 1,380 ft above sea level in Centre County.

1,380 ftElevation
2,852People
24 sq miLand
Sunny 68°
SunnyDew point 61°
1

Today in Halfmoon

NEXT 15 HOURS
Now mostly cloudy day 69° 0%
8p partly cloudy night 65° 1%
11p partly cloudy night 61° 0%
2a partly cloudy night 58° 0%
5a partly cloudy night 56° 0%
8a fog 56° 0%
Mostly cloudy
NEXT RAINFriday about 3 PM · 63%
→
Tue0%
Mostly cloudy Mostly cloudy
55
69
A
Wed10%
Partly cloudy Partly cloudy
60
75
A
Thu10%
Partly cloudy Partly cloudy
63
78
B
Fri60%
Showers likely Showers likely
49
77
C
Sat20%
Partly cloudy; cooler Partly cloudy; cooler
46
67
B
Sun40%
Chance of showers Chance of showers
47
64
C
Mon0%
Mostly sunny Mostly sunny
39
63
C
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
·