<<" Slowpoke .. I would like to ask something. When I went to Grindelwald First (about 2300 m) it was not cold contrary hot and windy so I became red:) but in Rothorn klum, it was too cold . What is the reason?
Also the weather change made me depressive:( ">>
I referred you to this information before:
I quote from that link:
The weather in the Alps: anything is possible
Nowhere the weather is more changeable than in the mountains. The Swiss Alps are the border between the cooler Northern European climate and the warmer Southern European climate. Therefore it often forms the separation between different kinds of weather. At the same time, cooler and warmer types of weather can be found in Switzerland.
At a regional level this is a known phenomenon too. While the sun is shining in one valley it may be raining at the other side of the mountain. The weather may also clear up very fast. A cloudy, drizzly morning does not necessarily have to be a sign for a full day of bad weather. There may be a cloudless sky within the hour. It goes the other way round as well, and on a beautiful day it may suddenly become cloudy and rainy. This certainly is something to take into account.
Temperatures vary a lot by season, location and elevation. Still, Switzerland's climate may be classified as mild. It is strongly influenced by the relatively nearby Atlantic. Winds from the Atlantic transport moist and mild maritime air into Switzerland. This results in a relatively mild climate. On average, the areas north of the Alps are cooler than the areas south of the Alps. South facing slopes receive more sunshine and are warmer than north facing slopes. Wide valleys and lakes receive more sunshine than narrow valleys. Elevation is what influences the temperature most. Every 100 m (328 ft) of gaining height causes temperature drops up to 1 °C (1.8 F). On mountain tops it may be chilly even in Summer and you may encounter thick layers of snow. In low sunny areas like Lake Geneva and the Rhône valley in the Valais, there is a Mediterranean climate in summer. Palm trees can be found in the sunniest region of Switzerland: the Lago Maggiore in Ticino.
Warmest months: July and August;
Warmest areas: Lake Geneva, the Rhône valley up to Brig, and the valleys of Ticino. All low elevation areas around lakes and rivers from the West to the North East (Geneva - Zurich - St. Gallen) are pretty warm as well;
Coolest months: January and February;
Coolest areas: all places high up in the mountains and the Engadine.
This MySwissAlps website has a lot of information that is useful to review before you visit Switzerland. If you return, look it over before you come back. It will help you plan better.
If it was hot and windy at First, you may have been experiencing a weather phenomenon called the "Föhn." It is common in the Swiss Alps.
<<"A föhn or foehn is a type of dry, warm, down-slope wind that occurs in the lee (downwind side) of a mountain range.
Föhn can be initiated when deep low pressures move into Europe drawing moist Mediterranean air over the Alps.
It is a rain shadow wind that results from the subsequent adiabatic warming of air that has dropped most of its moisture on windward slopes (see orographic lift). As a consequence of the different adiabatic lapse rates of moist and dry air, the air on the leeward slopes becomes warmer than equivalent elevations on the windward slopes. Föhn winds can raise temperatures by as much as 14 °C (25 °F) in just a matter of minutes. Central Europe enjoys a warmer climate due to the Föhn, as moist winds off the Mediterranean Sea blow over the Alps.
In some regions, föhn winds are associated with causing "circulatory problems", headaches, or similar ailments. Researchers have found, however, the foehn wind's warm temperature to be beneficial to humans in most situations, and have theorised that the reported negative effects may be a result of secondary factors, such as changes in the electrical field or in the ion state of the atmosphere, the wind's relatively low humidity, or the generally unpleasant sensation of being in an environment with strong and gusty winds.">>
Besides the possibility of the Föhn, you may have had a sunny day at First and a cloudy day at Rothorn Kulm.