Moon phase, moonrise and moonset times in Boulder, Colorado, United States

Current local time 7:06:27 AM (UTC-6)

May 2026 — Moon in Boulder

Date		Moonrise	Moonset	Moonrise	Moon phase	Illumination
May 1	Fri	—	5:50 AM	8:00 PM	Full moon	100%
May 2	Sat	—	6:25 AM	9:06 PM	Waning gibbous	99%
May 3	Sun	—	7:04 AM	10:10 PM	Waning gibbous	96%
May 4	Mon	—	7:49 AM	11:11 PM	Waning gibbous	92%
May 5	Tue	—	8:41 AM	—	Waning gibbous	86%
May 6	Wed	12:05 AM	9:40 AM	—	Waning gibbous	79%
May 7	Thu	12:53 AM	10:43 AM	—	Waning gibbous	71%
May 8	Fri	1:35 AM	11:48 AM	—	Waning gibbous	61%
May 9	Sat	2:11 AM	12:54 PM	—	Third quarter	52%
May 10	Sun	2:42 AM	2:00 PM	—	Waning crescent	42%
May 11	Mon	3:11 AM	3:05 PM	—	Waning crescent	31%
May 12	Tue	3:39 AM	4:10 PM	—	Waning crescent	22%
May 13	Wed	4:06 AM	5:15 PM	—	Waning crescent	13%
May 14	Thu	4:35 AM	6:20 PM	—	Waning crescent	6%
May 15	Fri	5:06 AM	7:26 PM	—	Waning crescent	2%
May 16	Sat	5:42 AM	8:32 PM	—	New moon	0%
May 17	Sun	6:23 AM	9:35 PM	—	Waxing crescent	1%
May 18	Mon	7:10 AM	10:34 PM	—	Waxing crescent	6%
May 19	Tue	8:04 AM	11:27 PM	—	Waxing crescent	12%
May 20	Wed	—	—	9:04 AM	Waxing crescent	21%
May 21	Thu	—	12:13 AM	10:08 AM	Waxing crescent	31%
May 22	Fri	—	12:52 AM	11:14 AM	Waxing crescent	42%
May 23	Sat	—	1:27 AM	12:20 PM	First quarter	53%
May 24	Sun	—	1:58 AM	1:25 PM	Waxing gibbous	64%
May 25	Mon	—	2:26 AM	2:30 PM	Waxing gibbous	73%
May 26	Tue	—	2:53 AM	3:35 PM	Waxing gibbous	81%
May 27	Wed	—	3:21 AM	4:41 PM	Waxing gibbous	88%
May 28	Thu	—	3:50 AM	5:46 PM	Waxing gibbous	94%
May 29	Fri	—	4:23 AM	6:52 PM	Waxing gibbous	98%
May 30	Sat	—	5:00 AM	7:57 PM	Waxing gibbous	100%
May 31	Sun	—	5:42 AM	8:59 PM	Full moon	100%

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