Weather World

Parnassus, PA Weather Forecast

Feedback E-mail the Weather

Quick Weather Clicks

Current Conditions

Settings

Partly Cloudy

59°F

Updated	4:44 am
Feels Like	54°F
Humidity	62%
Wind	W 9 mph
Barometer	30.13 in
Dew Point	46°F

Partly Cloudy

15°C

Updated	4:44 am
Feels Like	12°C
Humidity	62%
Wind	W 14 km/h
Barometer	102 kPa
Dew Point	8°C

WX Settings

°F °C°F °C

Text IconsText Icons

Sun & Moon

Converter

Cloud Cover	99%
uv UV Index	3
Sunrise	7:47 AM
Sunset	6:18 PM
Moonrise	10:08 PM
Moonset	1:06 PM

Civil Twilight
7:16 AM to 7:44 AM
6:18 PM to 6:46 PM
Parnassus PA Weather - Waning Gibbous Moon

Waning Gibbous Moon

Parnassus Weather Forecast

OVERNIGHT	TODAY	TONIGHT	SATURDAY	SATURDAY NIGHT	SUNDAY	SUNDAY NIGHT	MONDAY	MONDAY NIGHT	TUESDAY	TUESDAY NIGHT	WEDNESDAY

Mostly Cloudy	Mostly Sunny	Patchy Fog	Patchy Fog	Clouds	Clouds	Mostly Cloudy	Partly Sunny	Mostly Cloudy	Partly Cloudy	Partly Cloudy	Chance of Showers
Lo: 59°FLo: 15°C	Hi: 65°FHi: 18°C	Lo: 35°FLo: 2°C	Hi: 61°FHi: 16°C	Lo: 45°FLo: 7°C	Hi: 69°FHi: 21°C	Lo: 45°FLo: 7°C	Hi: 65°FHi: 18°C	Lo: 49°FLo: 9°C	Hi: 71°FHi: 22°C	Lo: 51°FLo: 11°C	Hi: 70°FHi: 21°C
											POP: 30%

POP = Probability of Precipitation.

Weather Outlook Updated: 223 AM EDT Fri Oct 30 2026 Parnassus, PA Weather - WeatherWorld.com

Trending Headlines

Parnassus Radar Loop

Use the map search tool if you want to place a location marker on the radar map...

Parnassus Weather Map

Comprehensive Weather Maps

Parnassus Quick Facts

National Two Day Weather Forecast

E-mail the Parnassus Weather Forecast

Voice your opinion or tell us about page issues...

Parnassus Forecast Discussion

Meteorlogic Glosserator
Instant definitions for any meteorological term.

Issued: 105 AM EDT Fri Oct 30 2026

Key Messages

1) Dry weather continues into the weekend

2) Minimal rain chances early next week, with higher chances by mid to late week

Discussion

... KEY MESSAGE 1... A weak cold front will continue to drop southeast across the Upper Ohio Valley region this morning, though no rain is expected with a lack of deep layer moisture. The main impact of this front will be increased cloud cover along the front, with scattered stratocu in cold advection through the afternoon. Highs today should also be arou...

Sponsored Links

Weather 101: Term of the Day

Rogue Wave

Commonly used term by mariners of a wave of an unexpected wave of much greater height or steepness than other waves in the prevailing sea or swell system. Rogue waves have been part of marine folklore for centuries. They are generally considered to be unexpectedly high waves which in some instances come from a direction different from the predominant waves in the local area. A single rogue wave has certainly been known to spell disaster for the mariner. They have, over the past twenty or thirty years, come to be recognized as unique phenomena albeit with several possible causes.,(1) Constructive interference. Several different wave trains of differing speeds and directions meet at the same time. The heights of the crests are additive so that an extreme wave may result when very high waves are included in the wave trains. The effect is normally short lived since the wave trains continue to separate and move on.,(2) Focusing of wave energy. When storm forced waves are developed in a water current counter to the wave direction an interaction can take place which results in a shortening of the wave frequency. The result is the superimposing of the wave trains and the generation of extreme waves. Examples of currents where these are sometimes seen are the Gulf Stream and Agulhas current. Extreme wave developed in this regime tend to be longer lived.,(3) Normal part of the wave spectrum. The generation of waves on water results not in a single wave height but in a spectrum of waves distributed from the smallest capillary waves to large waves indeed. Within this spectrum there is a finite possibility of each of the wave heights to occur with the largest waves being the least likely. The wave height most commonly observed and forecast is the significant wave height. This is defined as the average of the one third highest waves. The probability of encountering such a wave is about 1 in 10 while 1 in 1000 waves will be nearly double the significant wave height or higher. This is thought to be the source of at least some reports of rogue waves.