MOUNTAIN WEATHER

Weather data for hill walking and climbing

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Mountain Weather

Sierra Summit Weather Forecast

Base: 2143m (7031ft); Upper: 2655m (8711ft)

United States Of America

DATE BASE LEVEL @ 2143m UPPER LEVEL @ 2655m MORE ELEMENTS
Day Local Time Wind Dir Wind Speed Icon Temp RH Vis Wind Dir Wind Speed Icon Temp Precip Freeze Level Cloud Amount Pressure
Units =>degmph °F%milesdegmph °FInm%mb
Wed 01
May
01:00

76°

637646

351°

3380.0292241015
 04:00

77°

736596

355°

4380.0284921015
 07:00

60°

146386

341°

4400.0335501013
 10:00

253°

754296

283°

4420.0336901012
 13:00

246°

1055406

256°

7430.0340401011
 16:00

247°

852506

262°

5420.0341541011
 19:00

102°

241836

358°

2390.03336141014
 22:00

79°

640806

22°

1390.03193111015
Thu 02
May
22:00

76°

542816

343°

3410.03589111014
The 7 day weather forecast summary for Sierra Summit, United States Of America:

Taking a look at the forecast over the coming week and the average daytime maximum will be around 9°C, with a high of 15°C expected on Friday afternoon. The average minimum temperature for the week ahead will be around -1°C, dipping to its lowest on Sunday morning at -6°C. Saturday is expected to see the most precipitation with around 40mm, or about 1.6inches anticipated. The strongest wind will be felt on Saturday afternoon, coming from the southwest, and reaching around 13mph, that's about 21km/h.

The day label given represents the local day relative to the local time for the location you are looking at.
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Day

This time is corrected for local time zones and where possible for daylight saving times.
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Local Time

The wind direction we use on this page is the direction the wind is coming from, given in a 16 point compass format.
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Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
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Speed/
Gust

Temperature from our forecast perspective are fairly well defined, they are what we would expect to measure in a standard meteorological screen (in other words, shaded and well ventilated) at 2 metres above ground level.
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Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
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Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
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Precip Amount

The total amount of cloud as a percentage is derived from looking at cloud cover throughout the atmosphere and estimating how these combine when looked at from the ground.
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Cloud Amount

Here we try to capture the feel of the weather as an image – it will never be perfect but is useful for a quick overview.
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Weather

When we measure for forecast air pressure we are normally doing this relative to a certain height and most commonly relative to Mean Sea Level.
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Pressure