Forecast Details for Herkimer, NY

Recent Locations: Blain, PA Canton, NC Herkimer, NY

Current Alerts for Herkimer, NY: Flood Warning Flood Watch

This Afternoon: Mostly cloudy, with a high near 50. Northwest wind around 7 mph.

Tonight: A slight chance of showers before 8pm, then rain likely, mainly after 1am. Mostly cloudy, with a low around 37. Calm wind becoming east 5 to 7 mph after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday: Showers likely, mainly after 4pm. Mostly cloudy, with a high near 40. East wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night: A chance of showers, with thunderstorms also possible after 5am. Mostly cloudy, with a low around 37. East wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 72. Southeast wind 6 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night: Mostly cloudy, with a low around 49.

Saturday: Showers likely after 2pm. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.

Saturday Night: Showers. Low around 48. Chance of precipitation is 80%.

Sunday: Showers, mainly before 2pm. High near 58. Chance of precipitation is 80%.

Sunday Night: A chance of showers before 8pm. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.

Monday: Partly sunny, with a high near 43.

Monday Night: Partly cloudy, with a low around 28.

Tuesday: Partly sunny, with a high near 42.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

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North America Water Vapor (Moisture)

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Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle