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Home Return to list Heat Advisory 0006 Issued by the Denver / Boulder Forecast Office
Action: New Issued At: 2026-08-06 13:08:26 986 WWUS75 KBOU 061807 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver CO 1207 PM MDT Thu Aug 6 2026 COZ039-040-070215- /O.NEW.KBOU.HT.Y.0006.260808T1700Z-260809T0200Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including the cities of Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, and Parker 1207 PM MDT Thu Aug 6 2026 ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM MDT SATURDAY... * WHAT...Hot temperatures ranging from 98 to 101 degrees. * WHERE...Denver metro, western suburbs of Denver, and portions of the Urban Corridor including Boulder. * WHEN...11 AM to 8 PM Saturday. * IMPACTS...Hot temperatures may cause heat illness. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ Action: Continued Issued At: 2026-08-06 14:42:30 759 WWUS75 KBOU 061942 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver CO 142 PM MDT Thu Aug 6 2026 COZ039-040-071215- /O.CON.KBOU.HT.Y.0006.260808T1700Z-260809T0200Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including the cities of Brighton, Golden, Parker, Arvada, Highlands Ranch, Aurora, Longmont, Lakewood, Boulder, Denver International Airport, City of Denver, and Littleton 142 PM MDT Thu Aug 6 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT SATURDAY... * WHAT...Hot temperatures ranging from 98 to 101 degrees. * WHERE...Denver metro, western suburbs of Denver, and portions of the Urban Corridor including Boulder. * WHEN...From 11 AM to 8 PM MDT Saturday. * IMPACTS...Hot temperatures may cause heat illness. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ For more information from the National Weather Service, visit https://weather.gov/bou MAI Action: Continued Issued At: 2026-08-07 05:01:39 123 WWUS75 KBOU 071001 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver CO 401 AM MDT Fri Aug 7 2026 COZ039-040-072215- /O.CON.KBOU.HT.Y.0006.260808T1700Z-260809T0200Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including the cities of City of Denver, Littleton, Golden, Arvada, Lakewood, Highlands Ranch, Brighton, Denver International Airport, Parker, Aurora, Longmont, and Boulder 401 AM MDT Fri Aug 7 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT SATURDAY... * WHAT...Hot temperatures ranging from 98 to 102 degrees. * WHERE...Denver metro, western suburbs of Denver, and portions of the Urban Corridor including Boulder. * WHEN...From 11 AM to 8 PM MDT Saturday. * IMPACTS...Hot temperatures may cause heat illness. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Meier Action: Time Extended Issued At: 2026-08-07 13:09:21 234 WWUS75 KBOU 071809 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver CO 1209 PM MDT Fri Aug 7 2026 COZ038-081215- /O.EXB.KBOU.HT.Y.0006.260808T1700Z-260810T0200Z/ Larimer County Below 6000 Feet/Northwest Weld County- Including the cities of Loveland, Fort Collins, Hereford, and Nunn 1209 PM MDT Fri Aug 7 2026 ...HEAT ADVISORY IN EFFECT FROM 11 AM SATURDAY TO 8 PM MDT SUNDAY... * WHAT...Hot temperatures ranging from 98 to 102 degrees. * WHERE...The northern I-25 Corridor, including Fort Collins. * WHEN...From 11 AM Saturday to 8 PM MDT Sunday. * IMPACTS...Hot temperatures may cause heat illness. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ COZ039-040-081215- /O.EXT.KBOU.HT.Y.0006.260808T1700Z-260810T0200Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including the cities of Aurora, Littleton, Highlands Ranch, City of Denver, Boulder, Parker, Arvada, Brighton, Golden, Lakewood, Longmont, and Denver International Airport 1209 PM MDT Fri Aug 7 2026 ...HEAT ADVISORY NOW IN EFFECT FROM 11 AM SATURDAY TO 8 PM MDT SUNDAY... * WHAT...Hot temperatures ranging from 98 to 102 degrees. * WHERE...Denver metro, western suburbs of Denver, and portions of the Urban Corridor including Boulder. * WHEN...From 11 AM Saturday to 8 PM MDT Sunday. * IMPACTS...Hot temperatures may cause heat illness. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ For more information from the National Weather Service, visit https://weather.gov/bou MAI Action: Time and Area Extended Issued At: 2026-08-07 13:09:21 234 WWUS75 KBOU 071809 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver CO 1209 PM MDT Fri Aug 7 2026 COZ038-081215- /O.EXB.KBOU.HT.Y.0006.260808T1700Z-260810T0200Z/ Larimer County Below 6000 Feet/Northwest Weld County- Including the cities of Loveland, Fort Collins, Hereford, and Nunn 1209 PM MDT Fri Aug 7 2026 ...HEAT ADVISORY IN EFFECT FROM 11 AM SATURDAY TO 8 PM MDT SUNDAY... * WHAT...Hot temperatures ranging from 98 to 102 degrees. * WHERE...The northern I-25 Corridor, including Fort Collins. * WHEN...From 11 AM Saturday to 8 PM MDT Sunday. * IMPACTS...Hot temperatures may cause heat illness. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ COZ039-040-081215- /O.EXT.KBOU.HT.Y.0006.260808T1700Z-260810T0200Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including the cities of Aurora, Littleton, Highlands Ranch, City of Denver, Boulder, Parker, Arvada, Brighton, Golden, Lakewood, Longmont, and Denver International Airport 1209 PM MDT Fri Aug 7 2026 ...HEAT ADVISORY NOW IN EFFECT FROM 11 AM SATURDAY TO 8 PM MDT SUNDAY... * WHAT...Hot temperatures ranging from 98 to 102 degrees. * WHERE...Denver metro, western suburbs of Denver, and portions of the Urban Corridor including Boulder. * WHEN...From 11 AM Saturday to 8 PM MDT Sunday. * IMPACTS...Hot temperatures may cause heat illness. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ For more information from the National Weather Service, visit https://weather.gov/bou MAI Action: Continued Issued At: 2026-08-08 04:51:35 206 WWUS75 KBOU 080951 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver CO 351 AM MDT Sat Aug 8 2026 COZ038>040-082200- /O.CON.KBOU.HT.Y.0006.260808T1700Z-260810T0200Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including the cities of Fort Collins, Golden, Aurora, Boulder, Highlands Ranch, Littleton, Parker, Denver International Airport, Nunn, City of Denver, Longmont, Brighton, Hereford, Lakewood, Loveland, and Arvada 351 AM MDT Sat Aug 8 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM MDT SUNDAY... * WHAT...Hot temperatures ranging from 98 to 102 degrees. * WHERE...Denver metro, western suburbs of Denver, and portions of the Urban Corridor including Boulder. * WHEN...From 11 AM this morning to 8 PM MDT Sunday. * IMPACTS...Hot temperatures may cause heat illness. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Meier Action: Continued Issued At: 2026-08-08 14:13:23 503 WWUS75 KBOU 081913 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver CO 113 PM MDT Sat Aug 8 2026 COZ038>040-091215- /O.CON.KBOU.HT.Y.0006.000000T0000Z-260810T0200Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including the cities of Longmont, Brighton, Loveland, Littleton, Fort Collins, Boulder, Highlands Ranch, Arvada, Aurora, Denver International Airport, Hereford, Lakewood, Nunn, Golden, Parker, and City of Denver 113 PM MDT Sat Aug 8 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM MDT SUNDAY... * WHAT...Hot temperatures ranging from 98 to 103 degrees and warm overnight lows. * WHERE...Denver metro, western suburbs of Denver, and portions of the Urban Corridor including Boulder. * WHEN...Until 8 PM MDT Sunday. * IMPACTS...Hot temperatures may cause heat illness. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ For more information from the National Weather Service, visit https://weather.gov/bou MAI Action: Continued Issued At: 2026-08-09 04:27:35 364 WWUS75 KBOU 090927 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver CO 327 AM MDT Sun Aug 9 2026 COZ038>040-100200- /O.CON.KBOU.HT.Y.0006.000000T0000Z-260810T0200Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including the cities of Denver International Airport, Boulder, Golden, Hereford, Nunn, Fort Collins, Aurora, City of Denver, Parker, Littleton, Longmont, Highlands Ranch, Arvada, Brighton, Loveland, and Lakewood 327 AM MDT Sun Aug 9 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING... * WHAT...Hot temperatures ranging from 95 to 102 degrees. * WHERE...Denver metro, western suburbs of Denver, and portions of the Urban Corridor including Boulder. * WHEN...Until 8 PM MDT this evening. * IMPACTS...Hot temperatures may cause heat illness. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Meier Action: Cancelled Issued At: 2026-08-09 18:14:59 775 WWUS75 KBOU 092314 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver CO 514 PM MDT Sun Aug 9 2026 COZ038>040-100015- /O.CAN.KBOU.HT.Y.0006.000000T0000Z-260810T0200Z/ Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including the cities of Hereford, Parker, Fort Collins, Nunn, Arvada, Aurora, Lakewood, City of Denver, Highlands Ranch, Longmont, Littleton, Boulder, Brighton, Denver International Airport, Loveland, and Golden 514 PM MDT Sun Aug 9 2026 ...HEAT ADVISORY IS CANCELLED... Temperatures have dropped into the upper 80s and lower 90s across the area due to cloud cover and scattered high-based showers. $$ For more information from the National Weather Service, visit https://weather.gov/bou MV | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||