User:Orcaborealis/sandbox

Climate data
Data for Trondheim - Voll (127m asl, eklima. The station operated from 1923 - 1967, but then discontinued and did not start up untill 1997. Precipitation has been recorded at Voll since February 1999, but data for 2001 and 2004 is missing. Climate Ørland at the mouth of Trondheimsfjord Jan 2016 Feb 2011 Mar Apr May 2018 - Jun 2020 - Jul 2014 - Aug 2002 - Oct 2014 - Nov 2011 - Dec 2010

Locations years, averages/normals
Stavanger - Våland recording precipitation since 1882, recording temperature from 1927 although with good temp data 1943 to Jan 1988, then discontinued, recording again from Aug 2008 - present. The all-time low -17.8C from Jan 1987, coldest low in any other month -14.1C in Jan 1979. Three of the record highs from 2018 - Apr, May, Jul. 8 of 12 monthly all-time highs recorded after 2000.

Other climate boxes
Precip in Nov: 37 %, 86-15 normal 1.9C mean for Nov. Two cold months in a row. Dec mean Værnes, other data for Dec is Kvithamar 4 km away.

June record low 1997 - June high 2020 - Jul high 2019- Apr high 2019

Climate boxes - other
All the monthly record lows are from 1955 or older, with half of them from before 1920. The most exceptional record is the May record low -9.6°C from 1900, 3.7°C colder than the second coldest May night. The earliest weather stations were located closer to the city center (Trondheim, 58 m), but from 1945 the only weather station has been located further form the center and at a higher elevation (Voll, 127 m and Tyholt, 113 m) thus at a colder location. Three of the monthly record highs are from after 2000. From 1981 - 1997 the city had no weather stations recording temperature, so in this period Trondheim Airport is used for averages. Temperatures have warmed in recent decades. The last overnight frost in June was in 1958, and the coldest night in May after year 2000 had low -2.7°C. The coldest low since 2000 was -24.2°C in February 2010, and the warmest high after 2000 was 31.2°C in July 2014.

Trondheim Airport Værnes 1981-2010 (12 m) Trondheim Airport Værnes in Stjørdal is used by Norway's met office as climate reference station for the Trøndelag region, and is sometimes used as reference station for the city of Trondheim. The weather station started operating in 1946. The location near the wide and deep Trondheimsfjord moderates winter temperatures. The coldest month recorded at Værnes was February 1966 with mean -9.9 °C and average daily high -6 °C. The warmest month was July 2014 with mean 19.5 °C and average high 24.9 °C, while the weather station at nearby Kvithammar in Stjørdal recorded average high 26.1 °C in July 2014. The record lows are all from before year 2000, the most recent is the January record low from 1996. Three of the monthly record highs are from 2000 or later. The warmest temperature ever recorded in Stjørdal was by an earlier weather station on July 17th 1945 with 34.5 °C. This is the warmest temperature ever recorded in Nord-Trøndelag county. The driest month at Værnes was January 1972 with 0.8 mm precipitation, and the wettest was December 1975 with 270.2 mm. The largest snow depth recorded is 130 cm in March 1956, while the largest snow depth after 1980 is 71 cm in January 1986. There are on average 14 days during winter with at least 25 cm snow cover on the ground based on the years 1971-2000. Temperatures have tended to be warmer in more recent decades with less snow cover on the ground in winter due to melting. The only year air frost has been recorded in August was in 1956, and the second coldest low recorded in August is 1.3 °C in 1966. The only recording of air frost in June was in 1975.

Stavanger airport All-time record low: -19.8C at January 11th 1987 All-time record high: 33.5C on August 10th 1975

Climate 2016 and newer normal
Sunhrs 2016-2020 Trondheim Gløshaugen
 * Jan sun = 46+27+49+30+20 = 34
 * Feb sun = 68+70+98+40+77 = 353/5 = 71
 * Mar sun = 108+ 137+169+104+100 = 618 /5 = 124
 * Apr sun = 166+199+206+308+144 = 1023 / 5 = 205
 * May sun = 241+239+316+193+193 = 1182 / 5 = 236
 * Jun sun = 264+212+157+194+345 = 1172 / 5 = 234
 * Jul sun = 199+221+295+249+182 = 1146 / 5 = 229
 * Aug sun = 145+150+144+198+197 = 834 / 5 = 167
 * Sep sun = 105+187+102+134+121 = 649 / 5 = 130
 * Oct sun = 197+82+89+129+85 = 582 / 5 = 116
 * Nov sun = 40+34+60+56+38 = 228 /5 = 46
 * Dec sun = 10+18+20+14+19 = 81 / 5 = 16
 * year sun = 1608