Climate and Average Weather Year Round in Westerheim Germany

In Westerheim, the summers are comfortable; the winters are freezing, snowy, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 24°F to 71°F and is rarely below 12°F or above 82°F.

Based on the tourism score, the best time of year to visit Westerheim for warm-weather activities is from early July to late August.

The warm season lasts for 3.2 months, from June 2 to September 10, with an average daily high temperature above 64°F. The hottest month of the year in Westerheim is July, with an average high of 70°F and low of 52°F.

The cold season lasts for 3.6 months, from November 16 to March 4, with an average daily high temperature below 41°F. The coldest month of the year in Westerheim is January, with an average low of 24°F and high of 34°F.

In Westerheim, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Westerheim begins around June 3 and lasts for 3.7 months, ending around September 25.

The clearest month of the year in Westerheim is July, during which on average the sky is clear, mostly clear, or partly cloudy 60% of the time.

The cloudier part of the year begins around September 25 and lasts for 8.3 months, ending around June 3.

The cloudiest month of the year in Westerheim is November, during which on average the sky is overcast or mostly cloudy 67% of the time.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Westerheim varies throughout the year.

The wetter season lasts 3.9 months, from April 27 to August 24, with a greater than 32% chance of a given day being a wet day. The month with the most wet days in Westerheim is June, with an average of 11.8 days with at least 0.04 inches of precipitation.

The drier season lasts 8.1 months, from August 24 to April 27. The month with the fewest wet days in Westerheim is February, with an average of 7.0 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Westerheim is June, with an average of 11.8 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 41% on June 11.

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Westerheim experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Westerheim. The month with the most rain in Westerheim is July, with an average rainfall of 3.1 inches.

The month with the least rain in Westerheim is February, with an average rainfall of 0.8 inches.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Westerheim experiences significant seasonal variation in monthly snowfall.

The snowy period of the year lasts for 5.6 months, from November 3 to April 20, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Westerheim is December, with an average snowfall of 4.9 inches.

The snowless period of the year lasts for 6.4 months, from April 20 to November 3. The least snow falls around July 14, with an average total accumulation of 0.0 inches.

The length of the day in Westerheim varies extremely over the course of the year. In 2024, the shortest day is December 21, with 8 hours, 18 minutes of daylight; the longest day is June 20, with 16 hours, 8 minutes of daylight.

The earliest sunrise is at 5:18 AM on June 15, and the latest sunrise is 2 hours, 55 minutes later at 8:13 AM on December 31. The earliest sunset is at 4:26 PM on December 11, and the latest sunset is 5 hours, 2 minutes later at 9:27 PM on June 25.

Daylight saving time (DST) is observed in Westerheim during 2024, starting in the spring on March 31, lasting 6.9 months, and ending in the fall on October 27.

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The perceived humidity level in Westerheim, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Westerheim experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.3 months, from November 2 to April 12, with average wind speeds of more than 8.4 miles per hour. The windiest month of the year in Westerheim is January, with an average hourly wind speed of 9.9 miles per hour.

The calmer time of year lasts for 6.7 months, from April 12 to November 2. The calmest month of the year in Westerheim is August, with an average hourly wind speed of 6.9 miles per hour.

The predominant average hourly wind direction in Westerheim is from the west throughout the year.

To characterize how pleasant the weather is in Westerheim throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Westerheim for general outdoor tourist activities is from early July to late August, with a peak score in the first week of August.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Westerheim for hot-weather activities is from mid July to mid August, with a peak score in the first week of August.

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Westerheim typically lasts for 5.6 months (171 days), from around April 27 to around October 15, rarely starting before April 8 or after May 20, and rarely ending before September 26 or after November 4.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms in Westerheim should appear around May 7, only rarely appearing before April 24 or after May 26.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.5 months, from May 3 to August 18, with an average daily incident shortwave energy per square meter above 5.5 kWh. The brightest month of the year in Westerheim is June, with an average of 6.5 kWh.

The darker period of the year lasts for 3.6 months, from October 27 to February 15, with an average daily incident shortwave energy per square meter below 2.1 kWh. The darkest month of the year in Westerheim is December, with an average of 1.0 kWh.

For the purposes of this report, the geographical coordinates of Westerheim are 48.515 deg latitude, 9.624 deg longitude, and 2,677 ft elevation.

The topography within 2 miles of Westerheim contains only modest variations in elevation, with a maximum elevation change of 440 feet and an average elevation above sea level of 2,619 feet. Within 10 miles contains only modest variations in elevation (1,759 feet). Within 50 miles contains very significant variations in elevation (2,933 feet).

The area within 2 miles of Westerheim is covered by cropland (55%), trees (22%), and grassland (15%), within 10 miles by cropland (46%) and trees (34%), and within 50 miles by cropland (43%) and trees (34%).