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Saint Marys, PA Weather
Current conditions
Forecast for this hour (no station report in the last two hours)
Forecast
10-day-
Sunday Night
Partly cloudy, with a low around 39.
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Monday
Mostly sunny, with a high near 65.
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Monday Night
Mostly cloudy, with a low around 41.
National Weather Service forecast updated 5 days ago.
Hourly
Hourly forecast- Now48°
- 10 PM46°
- 11 PM44°
- Mon12 AM43°
- 1 AM42°
- 2 AM42°
- 3 AM41°
- 4 AM41°
- 5 AM40°
- 6 AM39°
- 7 AM39°
- 8 AM40°
- 9 AM44°
- 10 AM49°
- 11 AM54°
- 12 PM58°
- 1 PM61°
- 2 PM63°
- 3 PM65°
- 4 PM65°
- 5 PM64°
- 6 PM61°
- 7 PM58°
- 8 PM54°
10-day forecast
Details- TonightOct 20Clear then Widespread Frost30°
- WedOct 21Widespread Frost then Sunny31°67°
- ThuOct 22Widespread Frost then Sunny30°64°
- FriOct 23Widespread Frost then Sunny28°58°
- SatOct 24Widespread Frost then Sunny31°61°
- TodayOct 25Sunny39°64°
- MonOct 26Mostly Sunny41°65°
- TueOct 27Partly Sunny14%56°
- WedOct 28Cloudy31°51°
- ThuOct 29Cloudy0.02 in40°53°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
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Sun & moon
Almanac
MonthlyRidgway, records since 1913. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Shiloh 48 km
- Bradford 59 km
- DuBois 38 km
- Clearfield 46 km
- Ridgway 14 km
- Brookville 53 km
- Treasure Lake 31 km
- Kane 33 km
- Marienville 47 km
- Reynoldsville 46 km
- Coudersport 59 km
- Curwensville 50 km
Forecasters' discussion
From the National Weather Service office in CTP, issued 2 hrs ago
What Has Changed
* No significant changes
Key Messages
1) Rain-free conditions will persist through the end of October
Discussion
KEY MESSAGE 1: Rain-free conditions will persist through the end of October
A large area of high pressure will remain in place over the Northeast U.S. and Central Appalachians. Expect mainly clear skies and rain-free conditions right through the upcoming week.
Fog is a tough call for tonight. HREF and REFS probabilities are highest around LNS and over the NW mtns. However, clouds moving in from the NW could keep the NW from getting too foggy. The best bets are the same places as have been the last few nights (W Br Susq and Susq above Harrisburg, and Lake Raystown). Have mentioned patchy fog in many places due to the uncertainty, but kept dense fog mention to IPT/LNS.
Moderate variations will occur in daily and nocturnal temperatures as at least one weak, dry cold fronts move SE across the Commonwealth during the upcoming 5-6 days. Wind direction/speed and cloud cover will also show some minor day- day variations.
The first of the aforementioned dry cold fronts will slip SE across the CWA Monday night into early Tuesday, but with only limited moisture to work with, just some periods of BKN, shallow strato cu and cirrus will occur with no rainfall expected beyond a few sprinkles over the Northern Mtns Monday night. Have kept the PoPs below mentionable for now on Mon night. This front seems like it may slide in before it makes low clouds in the nrn tier.
After a brief shot of seasonably cool air Tuesday and Wed (directed mainly at the NE half of the state), a late week/Saturday rebound in temps (to well above normal values in the low-mid 60s across the Mtns and upper 60s to mid 70s in the Central and Southern Valleys) will follow. A second, weak frontal boundary could brush by across the Northern tier counties Friday afternoon and night. New Day8 is wet (40-60 PoPs) as the pattern shifts to a more-zonal flow for the east. GFS is still dry, though. Models/members are not in as good of agreement from then onward.
Aviation
Bright moonlight skies and light winds will prevail overnight, as high pressure remains over the area. A few high clouds, mainly at BFD.
As was the case last night, a very strong inversion could result in some fog and lower clouds late, even with the very dry air. Overall I did not change much from the 18Z TAF package for overnight.
More detail below.
The greatest chances for fog and lower CIGS are at IPT, MDT, and LNS, given weaker flow down there, closer to the high center.
Outlook...
Mon-Fri...VFR prevailing conditions.
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