Swatara Creek at Harper Tavern
7.9 mi- Level
- 0.8 ft
- Flow
- 232 cfs
Forecast peak 0.8 ft Fri 2 PM
Reading from Fri 8:15 AM · NWS gauge page
Appearance
Starts in 14 h 28 min
Issued for this forecast zone · National Weather Service State College PA
What
Sub-freezing temperatures as low as 30 possible.
Impacts
Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
Precautionary actions
Those with agricultural interests should protect sensitive vegetation.
Areas: Lebanon; Lancaster
See it on weather.gov (opens in a new tab)Observed 9:15 AM EDT at KLNS
Sunny and 52°11°.
Today: low 33°1° (likely 33°1° to 45°7°), high 61°16° (likely 59°15° to 61°16°).
Now 52°11°
Sunny
No precipitation expected in the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Fri 9a | Sunny | 48°9° (likely 48°9° to 49°9°) | 46°8° | 0% | 6 mph10 km/h from NE, gusts 9 mph14 km/h | 73% | 5% | 0 |
| Fri 10a | Sunny | 51°11° (likely 51°11° to 54°12°) | 51°11° | 0% | 7 mph11 km/h from NE, gusts 14 mph23 km/h | 63% | 6% | 1 |
| Fri 11a | Sunny | 55°13° (likely 55°13° to 57°14°) | 55°13° | 0% | 6 mph10 km/h from NE, gusts 14 mph22 km/h | 54% | 6% | 2 |
| Fri 12p | Sunny | 56°13° (likely 56°13° to 58°14°) | 56°13° | 0% | 6 mph10 km/h from NE, gusts 11 mph18 km/h | 48% | 12% | 3 |
| Fri 1p | Sunny | 58°14° (likely 58°14° to 60°16°) | 58°14° | 0% | 5 mph8 km/h from NE, gusts 10 mph16 km/h | 43% | 8% | 3 |
| Fri 2p | Sunny | 60°16° (likely 59°15° to 60°16°) | 60°16° | 0% | 5 mph8 km/h from NE, gusts 9 mph15 km/h | 38% | 8% | 3 |
| Fri 3p | Sunny | 60°16° (likely 59°15° to 61°16°) | 60°16° | 0% | 5 mph8 km/h from E, gusts 9 mph14 km/h | 37% | 8% | 2 |
| Fri 4p | Sunny | 60°16° (likely 59°15° to 60°16°) | 60°16° | 0% | 3 mph5 km/h from E, gusts 8 mph13 km/h | 36% | 12% | 1 |
| Fri 5p | Mostly sunny | 59°15° (likely 58°14° to 59°15°) | 59°15° | 0% | 3 mph5 km/h from E, gusts 9 mph14 km/h | 37% | 23% | 0 |
| Fri 6p | Mostly clear | 55°13° (likely 54°12° to 56°13°) | 55°13° | 0% | 2 mph3 km/h from E, gusts 8 mph12 km/h | 45% | 56% | 0 |
| Fri 7p | Cloudy | 51°11° (likely 50°10° to 52°11°) | 51°11° | 0% | 1 mph2 km/h from E, gusts 7 mph11 km/h | 54% | 73% | 0 |
| Fri 8p | Cloudy | 48°9° (likely 48°9° to 50°10°) | 48°9° | 0% | 1 mph2 km/h from E, gusts 5 mph9 km/h | 63% | 78% | 0 |
| Fri 9p | Cloudy | 45°7° (likely 45°7° to 49°9°) | 45°7° | 0% | 1 mph2 km/h from E, gusts 5 mph8 km/h | 73% | 77% | 0 |
| Fri 10p | Partly cloudy | 43°6° (likely 43°6° to 48°9°) | 43°6° | 0% | 1 mph2 km/h from NE, gusts 6 mph9 km/h | 76% | 69% | 0 |
| Fri 11p | Mostly clear | 41°5° (likely 41°5° to 47°8°) | 41°5° | 0% | 1 mph2 km/h from NE, gusts 5 mph8 km/h | 85% | 47% | 0 |
| Sat 12a | Mostly clear | 40°4° (likely 40°4° to 46°8°) | 40°4° | 0% | 1 mph2 km/h from NE, gusts 4 mph7 km/h | 85% | 43% | 0 |
| Sat 1a | Clear | 37°3° (likely 37°3° to 45°7°) | 37°3° | 0% | 1 mph2 km/h from NE, gusts 4 mph6 km/h | 92% | 40% | 0 |
| Sat 2a | Mostly clear | 37°3° (likely 37°3° to 43°6°) | 37°3° | 0% | 1 mph2 km/h from NE, gusts 3 mph5 km/h | 89% | 14% | 0 |
| Sat 3a | Mostly clear | 35°2° (likely 35°2° to 42°6°) | 35°2° | 0% | 1 mph2 km/h from NE, gusts 3 mph5 km/h | 92% | 45% | 0 |
| Sat 4a | Mostly clear | 34°1° (likely 34°1° to 41°5°) | 34°1° | 0% | 1 mph2 km/h from NE, gusts 3 mph5 km/h | 96% | 41% | 0 |
| Sat 5a | Mostly clear | 35°2° (likely 35°2° to 40°4°) | 35°2° | 0% | 1 mph2 km/h from NE, gusts 3 mph5 km/h | 92% | 30% | 0 |
| Sat 6a | Mostly clear | 35°2° (likely 35°2° to 40°4°) | 35°2° | 0% | 1 mph2 km/h from NE, gusts 3 mph5 km/h | 89% | 35% | 0 |
| Sat 7a | Mostly sunny | 35°2° (likely 35°2° to 39°4°) | 35°2° | 0% | 1 mph2 km/h from NE, gusts 3 mph5 km/h | 92% | 20% | 0 |
| Sat 8a | Mostly sunny | 37°3° (likely 37°3° to 40°4°) | 37°3° | 0% | 1 mph2 km/h from NE, gusts 4 mph6 km/h | 89% | 10% | 0 |
| Sat 9a | Sunny | 44°7° (likely 40°4° to 44°7°) | 44°7° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 79% | 11% | 1 |
| Sat 10a | Sunny | 50°10° (likely 48°9° to 51°11°) | 50°10° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 66% | 1% | 2 |
| Sat 11a | Sunny | 54°12° (likely 51°11° to 55°13°) | 54°12° | 0% | 0 mph0 km/h, gusts 7 mph11 km/h | 61% | 0% | 3 |
| Sat 12p | Sunny | 56°13° (likely 54°12° to 58°14°) | 56°13° | 0% | 1 mph2 km/h from SE, gusts 7 mph11 km/h | 57% | 1% | 4 |
| Sat 1p | Sunny | 59°15° (likely 56°13° to 59°15°) | 59°15° | 0% | 1 mph2 km/h from S, gusts 7 mph11 km/h | 49% | 2% | 4 |
| Sat 2p | Sunny | 60°16° (likely 57°14° to 60°16°) | 60°16° | 0% | 2 mph3 km/h from S, gusts 7 mph11 km/h | 47% | 3% | 4 |
| Sat 3p | Sunny | 61°16° (likely 58°14° to 61°16°) | 61°16° | 0% | 2 mph3 km/h from S, gusts 6 mph10 km/h | 44% | 2% | 3 |
| Sat 4p | Sunny | 61°16° (likely 58°14° to 61°16°) | 61°16° | 0% | 1 mph2 km/h from S, gusts 6 mph9 km/h | 44% | 1% | 2 |
| Sat 5p | Sunny | 60°16° (likely 57°14° to 60°16°) | 60°16° | 0% | 2 mph3 km/h from S, gusts 6 mph9 km/h | 47% | 0% | 1 |
| Sat 6p | Clear | 57°14° (likely 53°12° to 57°14°) | 57°14° | 0% | 1 mph2 km/h from S, gusts 6 mph9 km/h | 53% | 1% | 0 |
| Sat 7p | Clear | 53°12° (likely 49°9° to 53°12°) | 53°12° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 59% | 1% | 0 |
| Sat 8p | Clear | 46°8° (likely 46°8° to 49°9°) | 46°8° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 73% | 2% | 0 |
| Sat 9p | Clear | 44°7° (likely 44°7° to 48°9°) | 44°7° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 79% | 0% | 0 |
| Sat 10p | Clear | 42°6° (likely 42°6° to 47°8°) | 42°6° | 0% | 0 mph0 km/h, gusts 5 mph7 km/h | 86% | 0% | 0 |
| Sat 11p | Clear | 40°4° (likely 40°4° to 46°8°) | 40°4° | 0% | 0 mph0 km/h, gusts 2 mph4 km/h | 89% | 0% | 0 |
| Sun 12a | Clear | 38°3° (likely 38°3° to 45°7°) | 38°3° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 92% | 0% | 0 |
| Sun 1a | Clear | 37°3° (likely 37°3° to 44°7°) | 37°3° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 96% | 0% | 0 |
| Sun 2a | Clear | 36°2° (likely 36°2° to 44°7°) | 36°2° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 96% | 0% | 0 |
| Sun 3a | Clear | 35°2° (likely 34°1° to 43°6°) | 35°2° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 96% | 0% | 0 |
| Sun 4a | Clear | 34°1° (likely 33°1° to 42°6°) | 34°1° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 100% | 0% | 0 |
| Sun 5a | Clear | 34°1° (likely 32°0° to 41°5°) | 34°1° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 100% | 0% | 0 |
| Sun 6a | Clear | 34°1° (likely 32°0° to 40°4°) | 34°1° | 0% | 0 mph0 km/h, gusts 2 mph4 km/h | 100% | 0% | 0 |
| Sun 7a | Sunny | 34°1° (likely 31°−1° to 40°4°) | 34°1° | 0% | 0 mph0 km/h, gusts 2 mph4 km/h | 100% | 0% | 0 |
| Sun 8a | Sunny | 36°2° (likely 31°−1° to 40°4°) | 36°2° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 96% | 0% | 0 |
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Today: Sunny, with a high near 61. Northeast wind 3 to 7 mph.
Tonight: Widespread frost after 2am. Mostly clear, with a low around 33. Northeast wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Day: Widespread frost before 9am. Sunny, with a high near 61. Southeast wind around 2 mph.
Night: Areas of frost after 2am. Clear, with a low around 33. South wind around 1 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Areas of frost before 7am, then patchy frost and patchy fog between 7am and 9am. Sunny, with a high near 64. Southwest wind 0 to 3 mph.
Night: Clear, with a low around 34.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
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 44.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 64.
Night: Mostly clear, with a low around 38.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 61.
Night: Mostly cloudy, with a low around 41.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 65.
Night: Partly cloudy, with a low around 43.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
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.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
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.
Morning
6 AM–noon
20% chance · 0.11 in2.7 mm
Afternoon
noon–6 PM
30% chance · 0.17 in4.4 mm
Evening
6 PM–midnight
30% chance · 0.25 in6.3 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.
Dry, high 61°, low 33°.
Dry, high 61°, low 33°.
Dry, high 64°, low 34°, warming up.
Mostly dry, highs 59–69°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (CTP) (opens in a new tab)
No meaningful changes from yesterday’s forecast.
Forecast peak 0.8 ft Fri 2 PM
Reading from Fri 8:15 AM · NWS gauge page
Forecast peak 1.9 ft Fri 2 PM
Reading from Fri 7:45 AM · NWS gauge page
Forecast peak 2.3 ft Fri 2 PM
Reading from Fri 8:15 AM · NWS gauge page
Reading from Fri 8:15 AM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 64% less heating than a typical week.
Heating degree days, base 65°F
47, 17 and 5°F are the test points heat pumps are rated at. About 21 hours are near freezing and damp, when outdoor units defrost more often.
Dry air outside (dew point 41°F).
Today, 2:00 PM–4:00 PM
Good stretch to open the windows (air quality forecast not available for part of this window).
Today’s expected high is about typical for the date.
Fredericksburg weather by month: normals, records, snow and freeze dates
Sunrise 7:25 AM, sunset 6:14 PM.
Clouds most of the night (about 50% cover).
Waxing gibbous
92% lit · growing