Weather Forecast for Gettysburg

Pennsylvania, United States of America

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Sunny

Current Weather - Gettysburg: 4°C

Pennsylvania, United States of America

Sunny

Feels like 3°C

Wind

6 km/h S

Humidity

52%

Pressure

1030 mb

UV Index

2

Visibility

16 km

Sunny

Sunny

Tuesday, April 21, 2026

High

17°C

Low

-0°C

Rain Chance

0%

Hourly Forecast

Sunny 15°C
15:00
Sunny 16°C
16:00
Sunny 15°C
17:00
Partly Cloudy 12°C
18:00
Partly Cloudy 10°C
19:00
Partly Cloudy 8°C
20:00
Partly Cloudy 6°C
21:00
Partly Cloudy 5°C
22:00
Partly Cloudy 4°C
23:00
Apr 22

Day Statistics

Maximum Wind

16 km/h

Humidity

52%

Precipitation

0 mm

UV Index

7

Visibility

10 km

Rain Chance

0%

Snow Chance

0%

Sun & Moon

Sunrise

06:22 AM

Sunset

07:54 PM

Moonrise

09:15 AM

Moonset

12:22 AM

Moon Phase

Waxing Crescent

Moon Illumination

17%

Air Quality

PM2.5

5

μg/m³

PM10

5.4

μg/m³

NO₂

5.8

μg/m³

O₃

86.8

μg/m³

SO₂

3.3

μg/m³

CO

184.9

μg/m³

US EPA Index: 1 GB DEFRA Index: 1

Solar Radiation Data

Shortwave Radiation

379.42

Diffuse Radiation

60.29

DNI

361.15

GTI

199.08

Weather Alerts

Freeze Warning issued April 20 at 2:39PM EDT until April 21 at 9:00AM EDT by NWS State College PA

Southern Centre; Cambria; Blair; Huntingdon; Mifflin; Juniata; Somerset; Bedford; Fulton; Franklin; Southern Clinton; Southern Lycoming; Union; Snyder; Montour; Northumberland; Columbia; Perry; Dauphin; Schuylkill; Lebanon; Cumberland; Adams; York; Lancaster Apr 20, 02:39 PM - Apr 21, 09:00 AM
Severity: Moderate Urgency: Expected

* WHAT...Sub-freezing temperatures as low as 26 expected late tonight and early Tuesday. * WHERE...A portion of central Pennsylvania. * WHEN...From midnight tonight to 9 AM EDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Take steps now to protect tender plants and vegetation from the cold. Unprotected early season plantings may freeze.

Event: Freeze Warning Certainty: Likely Category: Met

Freeze Warning issued April 21 at 2:24AM EDT until April 21 at 9:00AM EDT by NWS State College PA

Southern Centre; Cambria; Blair; Huntingdon; Mifflin; Juniata; Somerset; Bedford; Fulton; Franklin; Southern Clinton; Southern Lycoming; Union; Snyder; Montour; Northumberland; Columbia; Perry; Dauphin; Schuylkill; Lebanon; Cumberland; Adams; York; Lancaster Apr 21, 02:24 AM - Apr 21, 09:00 AM
Severity: Moderate Urgency: Expected

* WHAT...Sub-freezing temperatures in the 25 to 30 degree range. * WHERE...A portion of central Pennsylvania. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Take steps now to protect tender plants and vegetation from the cold. Unprotected early season plantings may freeze.

Event: Freeze Warning Certainty: Likely Category: Met

Freeze Warning issued April 21 at 1:31AM EDT until April 21 at 10:00AM EDT by NWS Baltimore MD/Washington DC

Washington; Frederick; Carroll; Northern Baltimore; Cecil; Northwest Montgomery; Northwest Howard; Northwest Harford; Augusta; Rockingham; Shenandoah; Frederick; Page; Warren; Clarke; Greene; Madison; Rappahannock; Orange; Culpeper; Northern Fauquier; Southern Fauquier; Western Loudoun; Eastern Loudoun; Northern Virginia Blue Ridge; Central Virginia Blue Ridge; Northwest Prince William; Morgan; Berkeley; Jefferson Apr 21, 01:31 AM - Apr 21, 09:45 AM
Severity: Moderate Urgency: Expected

* WHAT...Sub-freezing temperatures as low as 26 to 30 degrees expected. * WHERE...Portions of central, north central, northeast, and northern Maryland, central, northern, northwest, and western Virginia, and panhandle West Virginia. * WHEN...Until 10 AM EDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Take steps now to protect tender plants from the cold. To prevent water pipes from freezing, wrap or drain or allow them to drip slowly.

Event: Freeze Warning Certainty: Likely Category: Met