Observed 7:50 AM EDT at KTHV

Mount Royal, PA weather

Foggy and 30°−1°.

Forecasts agree

Now 30°−1°

Fog

Wind: Calm; Light through 8 PM
Dew point: 30°−1°; Dry · up to 39°4° by 9 AM (comfortable)
Humidity: 100%; Air 30°−1°, dew point 30°−1° · frost likely
UV index: 1Low; Moderate 11 AM–4 PM · peak 4
Air quality: 79Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.53 inHg1034 hPa; Rising slowly · +0.04 inHg+1.4 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

4°2° cooler than this time yesterday (35°2° then, 31°−1° now)

Good hours for

Above 50°10° today by 11 AM
High 61°16° today at 4 PM
Below 50°10° tonight after 8 PM
Fog tomorrow night 3–5 AM
Fog Monday from 6 AM

This morningUp to 52°11° by 11 AM · Clear
This afternoonUp to 61°16° by 4 PM · Clear
TonightDown to 37°3° by 4 AM · Clear
Tomorrow morningUp to 53°12° by 11 AM · Clear
Tomorrow afternoonUp to 64°18° by 4 PM · Clear
Tomorrow nightDown to 39°4° by 4 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
Sat 8a	Sunny	36°2° (likely 34°1° to 37°3°)	36°2°	0%	0 mph0 km/h, gusts 2 mph3 km/h	96%	42%	0
Sat 9a	Sunny	41°5° (likely 37°3° to 41°5°)	41°5°	0%	0 mph0 km/h, gusts 2 mph3 km/h	92%	38%	1
Sat 10a	Mostly sunny	48°9° (likely 44°7° to 48°9°)	48°9°	0%	0 mph0 km/h, gusts 1 mph2 km/h	74%	19%	2
Sat 11a	Sunny	52°11° (likely 51°11° to 54°12°)	52°11°	0%	0 mph0 km/h, gusts 2 mph3 km/h	63%	0%	3
Sat 12p	Sunny	56°13° (likely 56°13° to 57°14°)	56°13°	0%	1 mph2 km/h from E, gusts 5 mph9 km/h	49%	0%	4
Sat 1p	Sunny	59°15° (likely 58°14° to 59°15°)	59°15°	0%	1 mph2 km/h from SE, gusts 7 mph11 km/h	42%	1%	4
Sat 2p	Sunny	60°16° (likely 59°15° to 60°16°)	60°16°	0%	1 mph2 km/h from SE, gusts 7 mph11 km/h	39%	1%	4
Sat 3p	Sunny	60°16° (likely 60°16° to 61°16°)	60°16°	0%	1 mph2 km/h from SE, gusts 4 mph7 km/h	39%	0%	3
Sat 4p	Sunny	61°16° (likely 60°16° to 62°17°)	61°16°	0%	2 mph3 km/h from SE, gusts 5 mph9 km/h	36%	0%	2
Sat 5p	Sunny	60°16° (likely 59°15° to 61°16°)	60°16°	0%	2 mph3 km/h from SE, gusts 3 mph5 km/h	37%	0%	1
Sat 6p	Clear	57°14° (likely 54°12° to 57°14°)	57°14°	0%	1 mph2 km/h from E, gusts 4 mph6 km/h	43%	0%	0
Sat 7p	Clear	53°12° (likely 49°9° to 53°12°)	53°12°	0%	1 mph2 km/h from E, gusts 6 mph9 km/h	52%	0%	0
Sat 8p	Clear	48°9° (likely 46°8° to 50°10°)	48°9°	0%	0 mph0 km/h, gusts 7 mph11 km/h	63%	0%	0
Sat 9p	Clear	45°7° (likely 44°7° to 48°9°)	45°7°	0%	0 mph0 km/h, gusts 7 mph11 km/h	70%	0%	0
Sat 10p	Clear	43°6° (likely 42°6° to 46°8°)	43°6°	0%	0 mph0 km/h, gusts 4 mph7 km/h	76%	0%	0
Sat 11p	Clear	42°6° (likely 41°5° to 44°7°)	42°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	79%	0%	0
Sun 12a	Clear	41°5° (likely 39°4° to 44°7°)	41°5°	0%	0 mph0 km/h, gusts 3 mph5 km/h	82%	0%	0
Sun 1a	Clear	40°4° (likely 37°3° to 43°6°)	40°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	85%	0%	0
Sun 2a	Clear	39°4° (likely 35°2° to 42°6°)	39°4°	0%	0 mph0 km/h, gusts 2 mph4 km/h	89%	0%	0
Sun 3a	Clear	38°3° (likely 35°2° to 41°5°)	38°3°	0%	0 mph0 km/h, gusts 2 mph4 km/h	89%	1%	0
Sun 4a	Clear	37°3° (likely 35°2° to 40°4°)	37°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	92%	0%	0
Sun 5a	Clear	37°3° (likely 34°1° to 39°4°)	37°3°	0%	0 mph0 km/h, gusts 1 mph2 km/h	89%	0%	0
Sun 6a	Clear	35°2° (likely 34°1° to 38°3°)	35°2°	0%	0 mph0 km/h, gusts 1 mph2 km/h	96%	1%	0
Sun 7a	Sunny	35°2° (likely 33°1° to 38°3°)	35°2°	0%	0 mph0 km/h, gusts 1 mph2 km/h	92%	9%	0
Sun 8a	Sunny	36°2° (likely 33°1° to 38°3°)	36°2°	0%	0 mph0 km/h, gusts 1 mph2 km/h	92%	12%	0
Sun 9a	Sunny	41°5° (likely 36°2° to 43°6°)	41°5°	0%	0 mph0 km/h, gusts 1 mph2 km/h	89%	12%	1
Sun 10a	Sunny	49°9° (likely 46°8° to 50°10°)	49°9°	0%	0 mph0 km/h, gusts 2 mph3 km/h	68%	1%	2
Sun 11a	Sunny	53°12° (likely 53°12° to 55°13°)	53°12°	0%	0 mph0 km/h, gusts 3 mph5 km/h	61%	1%	3
Sun 12p	Sunny	57°14° (likely 57°14° to 58°14°)	57°14°	0%	0 mph0 km/h, gusts 5 mph8 km/h	53%	2%	4
Sun 1p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	1 mph2 km/h from SW, gusts 6 mph10 km/h	48%	4%	4
Sun 2p	Sunny	63°17° (likely 61°16° to 63°17°)	63°17°	0%	1 mph2 km/h from SW, gusts 7 mph11 km/h	44%	5%	4
Sun 3p	Sunny	63°17° (likely 61°16° to 63°17°)	63°17°	0%	1 mph2 km/h from SW, gusts 8 mph13 km/h	44%	4%	3
Sun 4p	Sunny	64°18° (likely 61°16° to 64°18°)	64°18°	0%	2 mph3 km/h from S, gusts 8 mph13 km/h	43%	4%	2
Sun 5p	Sunny	63°17° (likely 60°16° to 63°17°)	63°17°	0%	2 mph3 km/h from S, gusts 7 mph11 km/h	44%	1%	1
Sun 6p	Clear	60°16° (likely 56°13° to 60°16°)	60°16°	0%	1 mph2 km/h from S, gusts 6 mph10 km/h	49%	0%	0
Sun 7p	Clear	55°13° (likely 52°11° to 55°13°)	55°13°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	61%	0%	0
Sun 8p	Clear	50°10° (likely 48°9° to 52°11°)	50°10°	0%	0 mph0 km/h, gusts 3 mph5 km/h	74%	0%	0
Sun 9p	Clear	48°9° (likely 46°8° to 50°10°)	48°9°	0%	0 mph0 km/h, gusts 3 mph5 km/h	77%	0%	0
Sun 10p	Clear	46°8° (likely 43°6° to 48°9°)	46°8°	0%	0 mph0 km/h, gusts 4 mph6 km/h	83%	0%	0
Sun 11p	Clear	44°7° (likely 41°5° to 47°8°)	44°7°	0%	0 mph0 km/h, gusts 3 mph5 km/h	89%	8%	0
Mon 12a	Clear	43°6° (likely 40°4° to 46°8°)	43°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	93%	12%	0
Mon 1a	Clear	42°6° (likely 38°3° to 45°7°)	42°6°	0%	0 mph0 km/h, gusts 3 mph6 km/h	93%	12%	0
Mon 2a	Clear	41°5° (likely 37°3° to 44°7°)	41°5°	0%	0 mph0 km/h, gusts 3 mph5 km/h	92%	15%	0
Mon 3a	Fog	40°4° (likely 35°2° to 44°7°)	40°4°	0%	0 mph0 km/h, gusts 3 mph4 km/h	92%	18%	0
Mon 4a	Fog	39°4° (likely 35°2° to 43°6°)	39°4°	0%	0 mph0 km/h, gusts 2 mph3 km/h	96%	17%	0
Mon 5a	Clear	39°4° (likely 35°2° to 43°6°)	39°4°	0%	0 mph0 km/h, gusts 2 mph3 km/h	92%	17%	0
Mon 6a	Fog	38°3° (likely 35°2° to 42°6°)	38°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	92%	20%	0
Mon 7a	Fog	37°3° (likely 34°1° to 42°6°)	37°3°	0%	1 mph2 km/h from W, gusts 2 mph4 km/h	96%	21%	0

Days ahead

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

Today, Oct 24. Mostly sunny. High 62°17°, low 35°2°. Typical 63°17° / 43°6°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Mostly sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Official NWS forecast
Today: Sunny, with a high near 62. East wind around 2 mph.
Tonight: Patchy fog between 3am and 4am. Clear, with a low around 35. East wind around 1 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
60°16°–62°17°
Low, likely
34°1°–37°3°
Typical high / low
63°17° / 43°6°
Wind
6 mph9 km/h
UV peak
4
Tomorrow, Oct 25. Fog. High 65°18°, low 37°3°. Typical 62°17° / 42°6°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Fog, 39°4°
  Dry
Official NWS forecast
Day: Patchy fog between 9am and 10am. Sunny, with a high near 65. Southwest wind around 2 mph.
Night: Areas of fog between midnight and 5am. Clear, with a low around 37. Southwest wind around 1 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
61°16°–65°18°
Low, likely
33°1°–37°3°
Typical high / low
62°17° / 42°6°
Wind
7 mph12 km/h
UV peak
4
Monday, Oct 26. Fog. High 69°21°, low 46°8°. Typical 62°17° / 42°6°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°20°
  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: Areas of fog before 9am. Sunny, with a high near 69. West wind 0 to 5 mph.
Night: Mostly clear, with a low around 46.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
67°19°–69°21°
Low, likely
34°1°–46°8°
Typical high / low
62°17° / 42°6°
Wind
10 mph15 km/h, gusts 15 mph24 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 63°17°, low 41°5°. Typical 62°17° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 51°10°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 40°4°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 63.
Night: Mostly clear, with a low around 41.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–65°18°
Low, likely
41°5°–48°9°
Typical high / low
62°17° / 42°6°
Wind
11 mph17 km/h, gusts 19 mph31 km/h
UV peak
4
Wednesday, Oct 28. Mostly cloudy. High 63°17°, low 44°7°. Typical 61°16° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 45°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 63.
Night: Mostly cloudy, with a low around 44.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–63°17°
Low, likely
36°2°–44°7°
Typical high / low
61°16° / 42°6°
Wind
7 mph11 km/h, gusts 15 mph24 km/h
UV peak
3
Thursday, Oct 29. Partly sunny. High 69°21°, low 48°9°. Typical 61°16° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 44°6°
  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, 45°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 69.
Night: Mostly clear, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–69°21°
Low, likely
42°6°–48°9°
Typical high / low
61°16° / 41°5°
Wind
10 mph15 km/h, gusts 25 mph40 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 71°22°, low 47°8°. Typical 60°16° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 45°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 71.
Night: Mostly clear, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
69°21°–73°23°
Low, likely
40°4°–48°9°
Typical high / low
60°16° / 41°5°
Wind
12 mph19 km/h, gusts 27 mph44 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 69°21°, low 44°7°. Typical 60°16° / 40°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 44°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 48°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
60°16°–74°23°
Low, likely
40°4°–49°9°
Typical high / low
60°16° / 40°4°
Wind
13 mph20 km/h, gusts 28 mph44 km/h
UV peak
4
Sunday, Nov 1. Cloudy. High 67°19°, low 48°9°. Typical 60°16° / 40°4°. Rain 0.01 in0.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 57°14°
  30% chance
4. Overnight
  midnight–6 AM
  Partly cloudy, 52°11°
  20% chance · 0.03 in0.7 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
54°12°–72°22°
Low, likely
38°3°–53°12°
Typical high / low
60°16° / 40°4°
Wind
11 mph17 km/h, gusts 23 mph36 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 66°19°, low 52°11°. Typical 59°15° / 40°4°. Rain 0.08 in2 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 56°13°
  20% chance
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°–74°23°
Low, likely
40°4°–58°14°
Typical high / low
59°15° / 40°4°
Wind
10 mph17 km/h, gusts 18 mph28 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 62°, low 35°.
Tomorrow
Dry, high 65°, low 37°, warming up.
Monday
Dry, high 69°, low 46°, warming up.
Rest of week
Mostly dry, highs 63–71°.

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

Yellow Breeches Creek near Camp Hill

13 mi

Below flood stage

Level: 1.2 ft
Flow: 134 cfs

Forecast peak 1.2 ft Sat 2 PM

Reading from Sat 7:16 AM · NWS gauge page

Swatara Creek at Middletown

14 mi

Below flood stage

Level: 2.2 ft

Forecast peak 2.2 ft Sat 2 PM

Reading from Sat 7:15 AM · NWS gauge page

Susquehanna River at Harrisburg

15 mi

Below flood stage

Level: 3.7 ft
Flow: 12,000 cfs

Forecast peak 3.7 ft Sat 2 PM

Reading from Sat 7 AM · NWS gauge page

West Conewago Creek at East Berlin

8.6 mi

Level: 2.8 ft
Flow: 48 cfs

Reading from Sat 6:45 AM · NWS gauge page

For your home

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

Heating this week

About 64% less heating than a typical week.

This week 33Typical 93

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 24
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 18 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 30°F). Indoor air will run dry too — a humidifier keeping indoor relative humidity in the 30–50% range is more comfortable and cuts static shocks, without going so high it fogs cold windows.

Open the windows?

Today, 2:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

Middletown Harrisburg Int'l Airport · official normals 1991–2020 · records 1888–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

On average 1° colder than normal (daily mean temperature).

−7°−4°SunOct 18
−2°−1°MonOct 19
+4°+2°TueOct 20
−1°WedOct 21
+2°+1°ThuOct 22
−2°−1°FriOct 23
—SatOct 24

Mount Royal weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 47 min; Losing 2 min 30 s a day; shortest Dec 21, 1 h 28 min less
Golden hour: 5:37–6:32 PM; Morning 7:10–8:05 AM
Blue hour: 6:32–6:42 PM; Morning 7:00–7:10 AM; first light 7:00 AM

Stars tonight? Fair

Clear 6:42 PM–7:01 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:39 AM · rises 5:11 PM
Full moon: Oct 26
New moon: Nov 9

Looking northwest from Mount Royal. The highest point on the skyline is about 2,100 ft, 28 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Mount Royal, PA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Yellow Breeches Creek near Camp Hill

Swatara Creek at Middletown

Susquehanna River at Harrisburg

West Conewago Creek at East Berlin

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon