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Semily 7-Day Snow Forecast - 20th September 2026

Semily Snow Forecast - 7 day

ECMWF IFS
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Updated 20 September 2026 02:45 PDT

7-Day Snow Forecast for Semily

1-week from 20 September.

For Forecast detail, see below.

Semily 7-Day Snow Forecast Highlights

When will there be fresh snow in Semily?

Semily Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (1,230ft)
Next Snow?
There is no snow currently in the forecast for Semily.

7-Day Snow Outlook for Semily

 
Snowfall

 
Snow Line

Max 67°F
Min 40°F

Snow unlikely

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Semily Medium-Range (7-Day) Snow Forecast Detail

Note :- Mountain weather is extremely dynamic; the forecast below will change. Any forecast snow may move forward or back in the forecast, and predicted snowfall depths will be revised in subsequent updates.

Max 67°F
Min 51°F

Valley temperatures from an overnight low of 51°F to daytime highs around 67°F

Temperature at BaseTemp at Base

Sun
20

Snow unlikely

CloudCloudLt DrizzleShwrs

Cloudy, light drizzle, rain showers later.

Forecast times for Semily are in Prague (Europe/Prague) time zone.

Max 58°F
Min 49°F

Valley temperatures from an overnight low of 49°F to daytime highs around 58°F

Temperature at BaseTemp at Base

Mon
21

Snow unlikely

CloudLt DrizzleLt DrizzleLt Drizzle

Cloudy early, then light drizzle later.

Forecast times for Semily are in Prague (Europe/Prague) time zone.

Max 58°F
Min 48°F

Valley temperatures from an overnight low of 48°F to daytime highs around 58°F

Temperature at BaseTemp at Base

Tue
22

Snow unlikely

MixedMixedFairFair

Clear spells early, then fair later.

Forecast times for Semily are in Prague (Europe/Prague) time zone.

Max 60°F
Min 42°F

Valley temperatures from an overnight low of 42°F to daytime highs around 60°F

Temperature at BaseTemp at Base

Wed
23

Snow unlikely

ClearFairMixedFair

Clear sky first, fair then clear spells, fair later.

Forecast times for Semily are in Prague (Europe/Prague) time zone.

Max 61°F
Min 40°F

Valley temperatures from an overnight low of 40°F to daytime highs around 61°F

Temperature at BaseTemp at Base

Thu
24

Snow unlikely

CloudLt DrizzleFairClear

Cloudy first, light drizzle then fair, clear sky later.

Forecast times for Semily are in Prague (Europe/Prague) time zone.

Max 61°F
Min 42°F

Valley temperatures from an overnight low of 42°F to daytime highs around 61°F

Temperature at BaseTemp at Base

Fri
25

Snow unlikely

ClearFairCloudMixed

Clear sky first, fair then cloudy, clear spells later.

Forecast times for Semily are in Prague (Europe/Prague) time zone.

Max 67°F
Min 48°F

Valley temperatures from an overnight low of 48°F to daytime highs around 67°F

Temperature at BaseTemp at Base

Sat
26

Snow unlikely

ClearClearClearClear

Clear sky.

Forecast times for Semily are in Prague (Europe/Prague) time zone.

No significant snowfall is forecast for this period.

This Snow Forecast for Semily, Czech Republic gives the predicted Snowfall and Freezing Levels for the next week.

The forecast snowfall depths given are the likely average accumulations for the Lower and Upper slopes. The actual snow depth in Semily, on any given trail or itinerary, may be dramatically different, particularly if the snowfall is accompanied by high winds and/or varying air temperatures.

Snow Forecasts beyond two days ahead are subject to significant change and variable reliability.

Semily Snow Forecast updated at 02:45 PDT, next update expected 08:00 PDT.

Snow Reliability

Semily has a reliable snow record, typically boasting a snow depth of 60-100 cm during peak season. With consistent snowfall from December to March, it's advisable to check the latest snow conditions on J2Ski for current updates.