NWS CLI archive · settlement source
CLIDEN · 덴버 · America/Denver · ← 2026-09-19 · 2026-09-21 → · All dates for KDEN · JSON · METAR-derived record
Final issued 2026-09-21 03:35:00 EDT · Product id iem:CDUS45-KBOU-210735:DEN:2026-09-20:final · IEM archive
Product id iem:CDUS45-KBOU-210735:DEN:2026-09-20:final · iem-afos · IEM archive
SHA-256 710ea30b67afcd806479626754020ae637299c5666722d926846736a69a22845
Product text
CDUS45 KBOU 210735
CLIDEN
CLIMATE REPORT
NATIONAL WEATHER SERVICE DENVER/BOULDER
135 AM MDT MON SEP 21 2026
...................................
...THE DENVER CO CLIMATE SUMMARY FOR SEPTEMBER 20 2026...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 74 308 PM 94 2010 78 -4 80
MINIMUM 49 540 AM 28 1983 49 0 51
AVERAGE 62 63 -1 66
PRECIPITATION (IN)
YESTERDAY 0.12 0.97 1965 0.04 0.08 T
MONTH TO DATE 1.04 0.89 0.15 0.41
SINCE OCT 1 8.84 14.02 -5.18 15.64
SINCE JAN 1 8.28 12.04 -3.76 13.51
SNOWFALL (IN)
YESTERDAY 0.0
MONTH TO DATE 0.0
SINCE SEP 1 0.0
SINCE JUL 1 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 3 4 -1 0
MONTH TO DATE 5 46 -41 34
SINCE SEP 1 5 46 -41 34
SINCE JUL 1 7 59 -52 34
COOLING
YESTERDAY 0 3 -3 1
MONTH TO DATE 145 86 59 59
SINCE SEP 1 145 86 59 59
SINCE JAN 1 1136 829 307 836
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NE (60)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 7.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 1000 PM
LOWEST 35 400 PM
AVERAGE 64
..........................................................
THE DENVER CO CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 92 2017
MINIMUM TEMPERATURE (F) 48 27 1995
SUNRISE AND SUNSET
SEPTEMBER 21 2026.....SUNRISE 645 AM MDT SUNSET 657 PM MDT
SEPTEMBER 22 2026.....SUNRISE 646 AM MDT SUNSET 656 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$Product id iem:CDUS45-KBOU-202330:DEN:2026-09-20:interim · iem-afos · IEM archive
SHA-256 cdd9f616c24a28486d5d0ac9130bcc1e63f9584651ae8d63f9100943c19a546d
Product text
CDUS45 KBOU 202330
CLIDEN
CLIMATE REPORT
NATIONAL WEATHER SERVICE DENVER/BOULDER
530 PM MDT SUN SEP 20 2026
...................................
...THE DENVER CO CLIMATE SUMMARY FOR SEPTEMBER 20 2026...
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 74 308 PM 94 2010 78 -4 80
MINIMUM 49 540 AM 28 1983 49 0 51
AVERAGE 62 63 -1 66
PRECIPITATION (IN)
TODAY 0.00 0.97 1965 0.04 -0.04 T
MONTH TO DATE 0.92 0.89 0.03 0.41
SINCE OCT 1 8.72 14.02 -5.30 15.64
SINCE JAN 1 8.16 12.04 -3.88 13.51
DEGREE DAYS
HEATING
TODAY 3 4 -1 0
MONTH TO DATE 5 46 -41 34
SINCE SEP 1 5 46 -41 34
SINCE JUL 1 7 59 -52 34
COOLING
TODAY 0 3 -3 1
MONTH TO DATE 145 86 59 59
SINCE SEP 1 145 86 59 59
SINCE JAN 1 1136 829 307 836
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NE (40)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 5.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 600 AM
LOWEST 35 400 PM
AVERAGE 64
..........................................................
THE DENVER CO CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 92 2017
MINIMUM TEMPERATURE (F) 48 27 1995
SUNRISE AND SUNSET
SEPTEMBER 20 2026.....SUNRISE 644 AM MDT SUNSET 659 PM MDT
SEPTEMBER 21 2026.....SUNRISE 645 AM MDT SUNSET 657 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$Product id iem:CDUS45-KBOU-202230:DEN:2026-09-20:interim · iem-afos · IEM archive
SHA-256 2e9982d5d80c495609bbd62305344baa99f961b83150f5762c2c743417eaebf9
Product text
CDUS45 KBOU 202230
CLIDEN
CLIMATE REPORT
NATIONAL WEATHER SERVICE DENVER/BOULDER
430 PM MDT SUN SEP 20 2026
...................................
...THE DENVER CO CLIMATE SUMMARY FOR SEPTEMBER 20 2026...
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 73 259 PM 94 2010 78 -5 80
MINIMUM 49 540 AM 28 1983 49 0 51
AVERAGE 61 63 -2 66
PRECIPITATION (IN)
TODAY 0.00 0.97 1965 0.04 -0.04 T
MONTH TO DATE 0.92 0.89 0.03 0.41
SINCE OCT 1 8.72 14.02 -5.30 15.64
SINCE JAN 1 8.16 12.04 -3.88 13.51
DEGREE DAYS
HEATING
TODAY 4 4 0 0
MONTH TO DATE 6 46 -40 34
SINCE SEP 1 6 46 -40 34
SINCE JUL 1 8 59 -51 34
COOLING
TODAY 0 3 -3 1
MONTH TO DATE 145 86 59 59
SINCE SEP 1 145 86 59 59
SINCE JAN 1 1136 829 307 836
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NE (40)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 5.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 600 AM
LOWEST 38 300 PM
AVERAGE 66
..........................................................
THE DENVER CO CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 92 2017
MINIMUM TEMPERATURE (F) 48 27 1995
SUNRISE AND SUNSET
SEPTEMBER 20 2026.....SUNRISE 644 AM MDT SUNSET 659 PM MDT
SEPTEMBER 21 2026.....SUNRISE 645 AM MDT SUNSET 657 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$Product id iem:CDUS45-KBOU-201232:DEN:2026-09-20:interim · iem-afos · IEM archive
SHA-256 df4e408ffa6fb4459858e3283225466f18281697be15a7a215eef0b1819973fd
Product text
CDUS45 KBOU 201232
CLIDEN
CLIMATE REPORT
NATIONAL WEATHER SERVICE DENVER/BOULDER
632 AM MDT SUN SEP 20 2026
...................................
...THE DENVER CO CLIMATE SUMMARY FOR SEPTEMBER 20 2026...
VALID AS OF 0600 AM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 57 1206 AM 94 2010 78 -21 80
MINIMUM 49 419 AM 28 1983 49 0 51
AVERAGE 53 63 -10 66
PRECIPITATION (IN)
TODAY 0.00 0.97 1965 0.04 -0.04
MONTH TO DATE 0.92 0.89 0.03
SINCE JAN 1 8.16 12.04 -3.88
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 5.0
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 400 AM
LOWEST 80 200 AM
AVERAGE 85
..........................................................
THE DENVER CO CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 92 2017
MINIMUM TEMPERATURE (F) 48 27 1995
SUNRISE AND SUNSET
SEPTEMBER 20 2026.....SUNRISE 644 AM MDT SUNSET 659 PM MDT
SEPTEMBER 21 2026.....SUNRISE 645 AM MDT SUNSET 657 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$Settlement source: the final NWS Climatological Report (CLI) for station KDEN for the contract date, as archived verbatim at https://weathermarket.io/nws-cli/KDEN/2026-09-20 with links to the NWS product and the IEM archive. A CORRECTED re-issue published before the settlement time supersedes earlier issues.
The settlement value for a date is the latest final CLI issued for that date; a corrected re-issue supersedes earlier issues. Interim same-day products never settle. This is the same rule that fills values.nwsOfficial in /api/station/{icao}/daily.
Every issue is stored verbatim as received - nothing is edited or re-derived. Products are held from 2026-09-01 (backfilled from the IEM AFOS archive) and ingested live from api.weather.gov since 2026-11-10, polled every 30 minutes. A date with no final CLI 14 hours after local midnight is reported as not_issued rather than filled in.