Temperature Monitoring Station:
DULUTH WILLIAMSN-JOHNSN MUNI

Monthly Mean Temperature Data

Raw Data relative to Expected Monthly Means

Difference from Regional Expectation

Breakpoint Adjusted Annual Average Comparison

Mean Rate of Change ( °C / Century )

Raw monthly anomalies		1.28
After quality control		1.26
After breakpoint alignment		1.17
Regional expectation during same months		1.25 ± 0.16
National average during same months		0.91 ± 0.09
Global land average during same months		1.13 ± 0.02

Regional Consistency

Comparison of monthly mean station data to regional expectation

	Typical Difference (°C, 95% range)	Correlation (R value)
Raw Monthly Anomalies	± 1.5	0.94
After Quality Control	± 1.5	0.94
After Breakpoint Adjustment	± 1.5	0.94

Quality Control Summary

Months missing 10 or more days	1
Serially repeated daily or monthly values	1
Extreme local outliers	0
Regional climatology outliers	1
Abrupt jumps	0
Marked as bad or manually changed by source	0
Exceeds global climatological range	0
Isolated observations	0
Frame shift repetitions	0
TMAX / TMIN inconsistency	0
TAVG outside TMAX / TMIN range	0
Total Observations Rejected by Quality Control	2

Station ID Codes

COOP	212246
COOP	212248
COOP	212252
COOP	212253
FAA	30Y
FAA	DLH
FAA	DYT
GHCND	USC00212246
GHCND	USC00212252
GHCND	USC00212253
GHCND	USW00014913
GHCND	USW00094909
GHCNM	42572745000
GSOD	727450-14913
GSOD	727456-04919
GSOD	727456-99999
GSOD	997269-99999
GSOD	999999-04919
GSOD	999999-14913
GSOD	999999-14959
HADCRU	727450
ICAO	DULM5
ICAO	KDLH
ICAO	KDYT
NCDC	20010887
NCDC	20010890
NCDC	20010891
NCDC	30001829
NCDC	30002157
NCDC	30002913
NWS	30Y
NWS	DHVM5
NWS	DLH
USAF	727450
USAF	727456
USAF	997269
WBAN	14913
WBAN	14959
WBAN	4919
WBAN	94909
WMO	72745
WMSSC	727450
WWR	72745

ID codes may be repeated if the identification of the station changed during its history or if two different records were found to contain the same data, in which case the records would be merged.