Background:
Climate normals are arithmetic averages of measured or observed meteorological elements. The general recommendation of the World Meteorological Organisation (WMO) is to use 30-year periods of reference. The current climatological standard normal period is 1981–2010. These long-term averages are used to describe the climate of an area. They are also used to compare the actual weather conditions occurring in a region with the average expected climate. This international coordination and standardisation enables comparisons of climate and climatological reports across national boundaries.

Information on the MeteoLux webpage in French or German:
https://www.meteolux.lu/fr/climat/normales-et-extremes/?lang=fr
https://www.meteolux.lu/de/klima/normal-und-extremwerte/

Station details:

• Latitude: 49°37’33.9’’N (49.6261 N)
• Longitude: 6°12’12.5’’E (6.20347 E)
• Station elevation (current): 376,1 m

Parameter description:

• NM_T (°C): MEAN AIR TEMPERATURE AT 2 M
• NM_XT (°C): MEAN DAILY MAXIMUM AIR TEMPERATURE AT 2 M
• NM_NT (°C): MEAN DAILY MINIMUM AIR TEMPERATURE AT 2 M
• NM_RR06_06 (mm): AMOUNT OF PRECIPITATION 05:46 UTC (M, D) TO 05:45 UTC (M+1, D+1)
• NM_INS (hours): SUNSHINE DURATION
• NM_U (%): MEAN RELATIVE HUMIDITY AT 2 M
• NM_QFF (hPa): MEAN ATMOSPHERIC AIR PRESSURE REDUCED TO MEAN-SEA LEVEL
• NM_ODRR01 (days): MEAN NUMBER OF DAYS WITH PRECIPITATION GREATER EQUAL 0.1 MM
• NM_OFOG (days): MEAN NUMBER OF DAYS WITH FOG
• NM_OCASETHSTORM (days): MEAN NUMBER OF DAYS WITH CASES OF THUNDERSTORM
• NM_OGLAZE (days): MEAN NUMBER OF DAYS WITH FREEZING PRECIPITATION
• NM_OSNOW (days): MEAN NUMBER OF DAYS WITH SNOWFALL
• NM_OGROUNDSNOW (days): MEAN NUMBER OF DAYS WITH SNOW COVER ON THE GROUND
• NM_ODXT25 (days): MEAN NUMBER OF SUMMER DAYS (= MAXIMUM TEMPERATURE GREATER EQUAL 25 °C)
• NM_ODXT30 (days): MEAN NUMBER OF HOT DAYS (= MAXIMUM TEMPERATURE GREATER EQUAL 30 °C)
• NM_ODNT0 (days): MEAN NUMBER OF FROST DAYS (= MINIMUM TEMPERATURE SMALLER THAN 0 °C)
• NM_0DXT0 (days): MEAN NUMBER OF ICE DAYS (= MAXIMUM TEMPERATURE SMALLER THAN 0 °C)

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