Click on button above to view PA Watches/Warnings/Special Wx Statements.


Jefferson county, PA Weather and Climate Synopsis

To access other UK Agricultural Weather Center Pages use the pull-down menu below.
(Click image to zoom) or Click Here

36 Hr. Forecast Map
All Radar images NOAA/UKAWC
Satellite images from NOAA

Weather Summary Hourly Observations Nowcast Agricultural Weather Outlook
7 Day Forecast Medium & Long Range Outlook Almanac Historical Facts





US Weekly Rainfall Departure



US Weekly Temperature Departure
Also see:



A joint service of the UK Ag Weather Center and the National Weather Service. 



Regional Weather Summary
National Weather Service State College PA
416 PM EDT Wed Apr 24 2024

Widely scattered showers will end by this evening with decreasing
clouds overnight, as a strong cold front drops south and east of
the Keystone state. Low temperatures will range from the mid 20s 
along the New York border to the mid 30s along the Mason Dixon 
line. Frost advisories and freeze warnings in effect for much of 
the Keystone state tonight. 

Sprawling Canadian high pressure will bring abnormally dry air, 
low humidity, and rain free conditions to the Keystone State for
Thursday and Friday. There will be another frost freeze risk 
Thursday night into early Friday morning. High temperatures on
Thursday will be in the 50s. Lows will range from the mid 20s
across the north, to the mid 30s elsewhere. 

Clouds increase Friday night with showers likely reaching the 
western part of the state by daybreak Saturday. 

A couple of showers and a thunderstorm remain possible over the 
last weekend of April, but it does not look like a total washout. 
Temperatures will climb into the 70s on Sunday.
National Ag. Weather Outlook, International Ag. Weather Summary
Current Surface Map, [2nd Source TWC]

Precision Agriculture Weather Forecast For JEFFERSON County


For Your Farm PointAgCast...Click here.
Hourly Observations For JEFFERSON county
900 PM EDT WED APR 24 2024

WESTERN PENNSYLVANIA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ERIE           CLOUDY    40  35  83 NE5       30.22R                  
MEADVILLE      CLOUDY   N/A N/A N/A N7G17     30.19R                  
FRANKLIN       LGT RAIN  38  32  79 NW7       30.18R                  
NEW CASTLE     CLOUDY    40  36  86 NW8       30.22R                  
BEAVER COUNTY  CLOUDY    42  33  73 N6        30.20R                  
BUTLER         CLOUDY    40  35  83 NW7       30.19R                  
PITTSBURGH INT CLOUDY    44  32  62 NW13      30.18R                  
PITTSBURGH     CLOUDY    44  33  65 N10G23    30.17R                  
INDIANA*       CLOUDY    46  39  76 N7        30.18R                  
LATROBE        CLOUDY    46  39  76 NW7       30.16R                  
CONNELLSVILLE  NOT AVBL                                               
WASHINGTON CO*   N/A    N/A N/A N/A MISG        N/A

Current Temperatures, Dewpoint, RH, Wind, Surface 4-Panel

Current Agricultural Weather Conditions in Pennsylvania
Based on observations at 900pm EDT, Wednesday April 24, 2024

Across Pennsylvania...temperatures are near 44 degrees west, near 52 degrees central, and near 64 degrees east. Current sky conditions are cloudy west, partly cloudy central, and mostly cloudy east. In the west, relative humidity is near 65%, and the dew point is near 33 degrees. In the central part of the state, relative humidity is near 58%, and the dew point is near 37 degrees. In the east, relative humidity is near 42%, and the dew point is near 41 degrees. Winds are coming from the north at 10 mph with gusts at 23 mph in the west, where conditions are not favorable for spraying due to strong winds. Winds are coming from the northwest at 12 mph in the central, where conditions are favorable for spraying. Winds are coming from the northwest at 12 mph in the east, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 64 degrees at Philadelphia. The lowest temperature is 38 degrees at Franklin.

Current NOWCAST not available:
Nowcasts are not issued routinely during fair weather. Only when
precipitation or other significant weather is occuring in this county will these
forecasts be issued. Currently, there is no short term forecast in effect.

All NWS Radars (In near-real time), Current Livestock Heat Stress Index (LSI), Current Wind Chill Map
Hazardous Weather Outlook For JEFFERSON County,PA 

221 PM EDT Wed Apr 24 2024

   FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EDT
THURSDAY  

This Hazardous Weather Outlook is for east central Ohio and western 
Pennsylvania.

 DAY ONE  This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Freeze Warning.

 DAYS TWO THROUGH SEVEN  Thursday through Tuesday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Freeze Warning.

Relative humidities in the upper 20s and lower 30s with dead fuel
moistures close to 10% may result in marginal fire weather conditions
tomorrow.

 SPOTTER INFORMATION STATEMENT  

Spotter activation is not expected at this time.

NWS Severe Weather Map , Convective Outlook

7-Day Forecast For JEFFERSON County, PA
Issued at 701 PM EDT Wed Apr 24 2024


FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EDT THURSDAY

TONIGHT
Mostly cloudy this evening, then becoming partly cloudy. Widespread frost after midnight. Lows in the upper 20s. North winds 5 to 10 mph with gusts up to 20 mph, becoming northeast after midnight.

THURSDAY
Mostly sunny. Highs in the upper 50s. East winds around 5 mph.

THURSDAY NIGHT
Clear. Lows in the mid 30s. East winds 5 to 10 mph.

FRIDAY
Mostly sunny. Highs in the lower 60s. Southeast winds 5 to 10 mph with gusts up to 20 mph.

FRIDAY NIGHT
Mainly clear in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the mid 40s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.

SATURDAY
Showers likely. Highs in the lower 60s. Chance of rain 70 percent.

SATURDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers. Mild. Lows in the lower 50s. Chance of rain 30 percent.

SUNDAY
Partly cloudy with a chance of showers. A chance of thunderstorms in the afternoon. Much warmer with highs in the upper 70s. Chance of rain 40 percent.

SUNDAY NIGHT
Partly cloudy. A chance of showers and thunderstorms in the evening. Mild. Lows in the upper 50s. Chance of rain 40 percent.

MONDAY
Partly cloudy. A chance of showers in the afternoon. Unseasonably warm with highs in the lower 80s. Chance of rain 40 percent.

MONDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers. Mild. Lows around 60. Chance of rain 40 percent.

TUESDAY
Showers likely. Warm with highs in the mid 70s. Chance of rain 70 percent.

TUESDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. Showers likely, mainly in the evening. Mild. Lows in the lower 50s. Chance of rain 70 percent.

WEDNESDAY
Mostly sunny. Highs in the lower 70s.

12-48 Hr Surface Forecast Maps, TWC 4-Panel Surface Forecast, Fire Danger, Day 1 Precip, Day 2 Precip, Days 1-5 Precip, Severe Weather Pot.-Day 1, Day 2

Medium & Long Range Outlook For Pennsylvania 
                                 PENN                                                                     
                 ---------------------------------------------
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                APR 30-MAY 4  MAY 2-MAY 8    JUN       JUN-AUG                      
                 -----------  -----------  --------  ---------
   Temperature:      Above        Above                                            
 Precipitation:      Below        Below                                            

....  Medium and long range outlooks provided by NCEP/K. Thomas Priddy
5 Day Rainfall Forecast, 6 to 10 Day , 8 to 14 Day , Text, 30-Day Outook, 90-Day Outook, 120-Day Outlook
Historical Weather And Climate Facts For Today

APRIL 24TH
HISTORIC WEATHER EVENTS
...1899...
Two women and one son lived to tell the story of being picked up by a
tornado and carried more than a fourth of a mile, flying far above the
church steeples, before being gently set down again. The young boy and one
of the ladies said they had the pleasure of flying alongside a horse. The
horse "kicked and struggled" as it flew high above, and was set down
unharmed about a mile away. (The Weather Channel)
...1908...
Severe thunderstorms spawned eighteen tornadoes over across the Central
Gulf Coast States claiming the lives of 310 persons. The state of
Mississippi was hardest hit. A tornado near Hattiesburg MS killed 143
persons and caused more than half a million dollars damage. Four violent
tornadoes accounted for 279 of the 310 deaths. The deadliest of the four
tornadoes swelled to a width of 2.5 miles as it passed near Amite LA. The
tornado also leveled most of Purvis MS. (David Ludlum) (The Weather
Channel)
...1925...
Louisville's and Bowling Green's warmest April temperature: 91 and 96 
degrees, respectively. Also, Lexington's earliest 90 degree temperature (90 
degrees). (NWS Louisville)
...1980...
Three of eight helicopters were damaged in a sandstorm during a 
failed-attempt to rescue 52 American hostages held in Iran. The hostages 
were later released on January 20, 1981.
...2005...
The latest measurable snowfall on record occurred across parts of Kentucky 
last year. The snow was the result of cold air and moisture wrapping around 
an area of low pressure located over the northeast United States. 
Accumulating snow was mainly confined to the ridgetops and higher 
elevations of extreme east Kentucky but at least a few flakes were reported 
just about everywhere. Some amounts reported from across eastern and 
central Kentucky  include...0.6 inches in Booneville...1.0 inch at 
Jeremiah...1.2 inches at the Jackson Weather Office...1.5 inches at 
Cumberland...4.0 inches at Lynch...and 5.0 inches at Closplint. (NWS Jackson)

Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky