Observed 9:00 AM EDT at KTHV

Grantley, PA weather

Sunny and 46°8°.

Forecasts agree

Now 46°8°

Sunny

Wind: Calm; Up to 8 mph13 km/h through 10 PM
Dew point: 43°6°; Comfortable · down to 34°1° by 4 PM (dry)
UV index: 1Low; Moderate 12–3 PM · peak 3
Air quality: 56Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.35 inHg1028 hPa; Rising · +0.05 inHg+1.6 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

High 61°16° today at 2 PM
Below 50°10° tonight after 8 PM
Low 35°2° tomorrow at 8 AM
Above 50°10° tomorrow by 11 AM

This morningUp to 55°13° by 11 AM · Clear
This afternoonUp to 61°16° by 2 PM · Clear
TonightDown to 37°3° by 5 AM · Partly cloudy
Tomorrow morningUp to 53°12° by 11 AM · Clear
Tomorrow afternoonUp to 62°17° by 4 PM · Clear
Tomorrow nightDown to 36°2° by 5 AM · Clear
Sunday morningUp to 40°4° by 9 AM · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Fri 10a	Sunny	50°10° (likely 50°10° to 52°11°)	47°8°	0%	7 mph11 km/h from NE, gusts 10 mph16 km/h	66%	15%	1
Fri 11a	Sunny	55°13° (likely 55°13° to 56°13°)	55°13°	0%	8 mph13 km/h from NE, gusts 13 mph21 km/h	55%	15%	2
Fri 12p	Sunny	57°14° (likely 57°14° to 58°14°)	57°14°	0%	8 mph13 km/h from NE, gusts 12 mph20 km/h	49%	7%	3
Fri 1p	Sunny	59°15° (likely 58°14° to 59°15°)	59°15°	0%	7 mph11 km/h from NE, gusts 11 mph18 km/h	44%	7%	3
Fri 2p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	6 mph10 km/h from NE, gusts 11 mph17 km/h	39%	6%	3
Fri 3p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	6 mph10 km/h from NE, gusts 10 mph17 km/h	38%	3%	2
Fri 4p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	6 mph10 km/h from NE, gusts 10 mph15 km/h	36%	1%	1
Fri 5p	Sunny	60°16° (likely 58°14° to 60°16°)	60°16°	0%	5 mph8 km/h from NE, gusts 9 mph15 km/h	35%	3%	1
Fri 6p	Clear	56°13° (likely 54°12° to 56°13°)	56°13°	0%	3 mph5 km/h from E, gusts 7 mph11 km/h	42%	5%	0
Fri 7p	Clear	52°11° (likely 50°10° to 52°11°)	52°11°	0%	2 mph3 km/h from E, gusts 7 mph11 km/h	52%	16%	0
Fri 8p	Mostly clear	48°9° (likely 48°9° to 50°10°)	48°9°	0%	1 mph2 km/h from E, gusts 7 mph12 km/h	63%	52%	0
Fri 9p	Mostly clear	46°8° (likely 46°8° to 49°9°)	46°8°	0%	1 mph2 km/h from E, gusts 7 mph12 km/h	79%	67%	0
Fri 10p	Cloudy	44°7° (likely 44°7° to 48°9°)	44°7°	0%	0 mph0 km/h, gusts 8 mph13 km/h	82%	63%	0
Fri 11p	Clear	42°6° (likely 42°6° to 47°8°)	42°6°	0%	0 mph0 km/h, gusts 10 mph15 km/h	86%	41%	0
Sat 12a	Clear	41°5° (likely 40°4° to 46°8°)	41°5°	0%	0 mph0 km/h, gusts 10 mph16 km/h	85%	40%	0
Sat 1a	Clear	41°5° (likely 40°4° to 45°7°)	41°5°	0%	0 mph0 km/h, gusts 9 mph15 km/h	85%	42%	0
Sat 2a	Clear	39°4° (likely 38°3° to 43°6°)	39°4°	0%	0 mph0 km/h, gusts 8 mph14 km/h	89%	43%	0
Sat 3a	Mostly clear	39°4° (likely 37°3° to 41°5°)	39°4°	0%	0 mph0 km/h, gusts 6 mph10 km/h	92%	25%	0
Sat 4a	Clear	38°3° (likely 35°2° to 41°5°)	38°3°	0%	0 mph0 km/h, gusts 4 mph6 km/h	92%	6%	0
Sat 5a	Clear	37°3° (likely 33°1° to 40°4°)	37°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	96%	7%	0
Sat 6a	Mostly clear	36°2° (likely 31°−1° to 39°4°)	36°2°	0%	0 mph0 km/h, gusts 1 mph2 km/h	96%	16%	0
Sat 7a	Mostly sunny	36°2° (likely 31°−1° to 38°3°)	36°2°	0%	0 mph0 km/h, gusts 2 mph3 km/h	96%	27%	0
Sat 8a	Sunny	35°2° (likely 31°−1° to 38°3°)	35°2°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	30%	0
Sat 9a	Mostly sunny	40°4° (likely 35°2° to 43°6°)	40°4°	0%	0 mph0 km/h, gusts 4 mph6 km/h	96%	23%	1
Sat 10a	Sunny	48°9° (likely 45°7° to 49°9°)	48°9°	0%	0 mph0 km/h, gusts 5 mph8 km/h	74%	5%	2
Sat 11a	Sunny	53°12° (likely 52°11° to 54°12°)	53°12°	0%	0 mph0 km/h, gusts 5 mph8 km/h	64%	2%	3
Sat 12p	Sunny	56°13° (likely 56°13° to 57°14°)	56°13°	0%	1 mph2 km/h from E, gusts 7 mph12 km/h	55%	1%	4
Sat 1p	Sunny	59°15° (likely 57°14° to 59°15°)	59°15°	0%	1 mph2 km/h from E, gusts 8 mph12 km/h	47%	3%	4
Sat 2p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	1 mph2 km/h from E, gusts 6 mph10 km/h	44%	2%	4
Sat 3p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	1 mph2 km/h from E, gusts 6 mph9 km/h	42%	1%	4
Sat 4p	Sunny	62°17° (likely 58°14° to 62°17°)	62°17°	0%	1 mph2 km/h from E, gusts 6 mph9 km/h	41%	2%	3
Sat 5p	Sunny	61°16° (likely 57°14° to 61°16°)	61°16°	0%	2 mph3 km/h from E, gusts 6 mph10 km/h	42%	3%	1
Sat 6p	Clear	58°14° (likely 54°12° to 58°14°)	58°14°	0%	1 mph2 km/h from E, gusts 7 mph11 km/h	47%	0%	0
Sat 7p	Clear	54°12° (likely 50°10° to 54°12°)	54°12°	0%	1 mph2 km/h from E, gusts 7 mph12 km/h	57%	0%	0
Sat 8p	Clear	48°9° (likely 47°8° to 49°9°)	48°9°	0%	1 mph2 km/h from SE, gusts 7 mph12 km/h	68%	0%	0
Sat 9p	Clear	45°7° (likely 44°7° to 47°8°)	45°7°	0%	0 mph0 km/h, gusts 7 mph11 km/h	79%	0%	0
Sat 10p	Clear	43°6° (likely 42°6° to 46°8°)	43°6°	0%	0 mph0 km/h, gusts 7 mph11 km/h	86%	0%	0
Sat 11p	Clear	41°5° (likely 40°4° to 45°7°)	41°5°	0%	0 mph0 km/h, gusts 7 mph11 km/h	89%	0%	0
Sun 12a	Clear	40°4° (likely 38°3° to 45°7°)	40°4°	0%	0 mph0 km/h, gusts 7 mph11 km/h	89%	0%	0
Sun 1a	Clear	39°4° (likely 36°2° to 44°7°)	39°4°	0%	0 mph0 km/h, gusts 6 mph10 km/h	92%	0%	0
Sun 2a	Clear	38°3° (likely 34°1° to 44°7°)	38°3°	0%	0 mph0 km/h, gusts 5 mph9 km/h	92%	0%	0
Sun 3a	Clear	37°3° (likely 31°−1° to 43°6°)	37°3°	0%	0 mph0 km/h, gusts 5 mph8 km/h	96%	0%	0
Sun 4a	Clear	37°3° (likely 30°−1° to 41°5°)	37°3°	0%	0 mph0 km/h, gusts 4 mph6 km/h	96%	0%	0
Sun 5a	Clear	36°2° (likely 29°−2° to 39°4°)	36°2°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	1%	0
Sun 6a	Clear	35°2° (likely 28°−2° to 39°4°)	35°2°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	5%	0
Sun 7a	Sunny	34°1° (likely 28°−2° to 39°4°)	34°1°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	11%	0
Sun 8a	Sunny	35°2° (likely 28°−2° to 40°4°)	35°2°	0%	0 mph0 km/h, gusts 1 mph2 km/h	100%	15%	0
Sun 9a	Sunny	40°4° (likely 32°0° to 47°8°)	40°4°	0%	0 mph0 km/h, gusts 2 mph4 km/h	89%	18%	1

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 23. Sunny. High 62°17°, low 35°2°. Typical 63°17° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 37°3°
  Dry
Official NWS forecast
Today: Sunny, with a high near 62. Northeast wind 5 to 8 mph.
Tonight: Areas of frost after 2am. Mostly clear, with a low around 35. Northeast wind 0 to 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
59°15°–62°17°
Low, likely
35°2°–45°7°
Typical high / low
63°17° / 40°4°
Wind
8 mph13 km/h, gusts 17 mph27 km/h
UV peak
4
Tomorrow, Oct 24. Mostly sunny. High 62°17°, low 34°1°. Typical 63°17° / 39°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Mostly sunny, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 36°2°
  Dry
Official NWS forecast
Day: Areas of frost before 9am. Sunny, with a high near 62. East wind around 2 mph.
Night: Clear, with a low around 34. East wind around 1 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
59°15°–62°17°
Low, likely
30°−1°–38°3°
Typical high / low
63°17° / 39°4°
Wind
9 mph14 km/h, gusts 15 mph24 km/h
UV peak
4
Sunday, Oct 25. Mostly sunny. High 65°18°, low 36°2°. Typical 62°17° / 39°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy frost before 8am. Sunny, with a high near 65. Southwest wind around 1 mph.
Night: Mostly clear, with a low around 36.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
61°16°–65°18°
Low, likely
28°−2°–39°4°
Typical high / low
62°17° / 39°4°
Wind
7 mph10 km/h
UV peak
4
Monday, Oct 26. Sunny. High 69°21°, low 46°8°. Typical 62°17° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 69.
Night: Mostly clear, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–69°21°
Low, likely
31°−1°–46°8°
Typical high / low
62°17° / 38°3°
Wind
8 mph13 km/h, gusts 14 mph23 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 64°18°, low 41°5°. Typical 62°17° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 53°11°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 42°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 64.
Night: Partly cloudy, with a low around 41.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–66°19°
Low, likely
41°5°–48°9°
Typical high / low
62°17° / 38°3°
Wind
9 mph15 km/h, gusts 17 mph27 km/h
UV peak
4
Wednesday, Oct 28. Mostly cloudy. High 62°17°, low 44°7°. Typical 61°16° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 42°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 47°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 62.
Night: Mostly cloudy, with a low around 44.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
59°15°–63°17°
Low, likely
37°3°–47°8°
Typical high / low
61°16° / 38°3°
Wind
10 mph17 km/h, gusts 17 mph27 km/h
UV peak
2
Thursday, Oct 29. Mostly cloudy. High 67°19°, low 46°8°. Typical 61°16° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 46°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 67.
Night: Partly cloudy, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–69°21°
Low, likely
41°5°–51°11°
Typical high / low
61°16° / 38°3°
Wind
11 mph17 km/h, gusts 24 mph39 km/h
UV peak
3
Friday, Oct 30. Cloudy. High 68°20°, low 49°9°. Typical 60°16° / 37°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°9°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
62°17°–71°22°
Low, likely
46°8°–52°11°
Typical high / low
60°16° / 37°3°
Wind
9 mph15 km/h, gusts 20 mph32 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 60°16°, low 45°7°. Typical 60°16° / 37°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 58°14°
  Dry
3. Evening
  6 PM–midnight
  Clear, 49°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 40°5°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
54°12°–66°19°
Low, likely
38°3°–54°12°
Typical high / low
60°16° / 37°3°
Wind
11 mph18 km/h, gusts 24 mph38 km/h
UV peak
2
Sunday, Nov 1. Rain. High 62°17°, low 47°8°. Typical 60°16° / 37°3°. Rain 0.43 in11 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Rain, 40°4°
  20% chance · 0.1 in2.4 mm
2. Afternoon
  noon–6 PM
  Rain, 58°14°
  20% chance · 0.11 in2.9 mm
3. Evening
  6 PM–midnight
  Rain, 52°11°
  20% chance · 0.2 in5.2 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
58°14°–65°18°
Low, likely
35°2°–55°13°
Typical high / low
60°16° / 37°3°
Wind
10 mph16 km/h, gusts 22 mph35 km/h

10 days15 days30 days

The outlook

Today
Dry, high 62°, low 35°.
Tomorrow
Dry, high 62°, low 34°.
Sunday
Dry, high 65°, low 36°, warming up.
Rest of week
Mostly dry, highs 60–69°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (CTP) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Susquehanna River at Marietta

13 mi

Below flood stage

Level: 34.6 ft
Flow: 14,600 cfs

Forecast peak 34.6 ft Fri 2 PM

Reading from Fri 8:30 AM · NWS gauge page

Codorus Creek near York

1.4 mi

Level: 2.1 ft
Flow: 77 cfs

Reading from Fri 8 AM · NWS gauge page

Central PA Dams Indian Rock Dam on Codorus Creek

1.7 mi

Below flood stage

Level: 373 ft

Reading from Fri 9 AM · NWS gauge page

Codorus Creek at Spring Grove

7.8 mi

Level: 0.8 ft
Flow: 17 cfs

Reading from Fri 8 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 66% less heating than a typical week.

This week 35Typical 103

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 26
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 22 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 43°F).

Open the windows?

Today, 2:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

York Airport · official normals 1991–2020 · records 1997–2026

Oct 23, today vs a typical year

Today’s expected high is about typical for the date.

Last 7 days vs normal

On average 5°3° colder than normal (daily mean temperature).

−6°−4°SatOct 17
−7°−4°SunOct 18
−3°−2°MonOct 19
—TueOct 20
−3°−2°WedOct 21
−3°−2°ThuOct 22
—FriOct 23

Grantley weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 50 min; Losing 2 min 30 s a day; shortest Dec 21, 1 h 30 min less
Golden hour: 5:38–6:32 PM; Morning 7:09–8:03 AM
Blue hour: 6:32–6:43 PM; Morning 6:58–7:09 AM; first light 6:58 AM

Stars tonight? Fair

Mostly clear 4–6:59 AM, but the moon is 95% lit and up.

Moon

Waxing gibbous

92% lit · growing

Today: sets 4:30 AM · rises 4:46 PM
Full moon: Oct 26
New moon: Nov 9

Looking southeast from Grantley. The highest point on the skyline is about 3,700 ft, 30 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.