Greeley, CO weather in May
Expect mild weather with frequent rain in Greeley in May, with highs near 75°F and lows near 45°F. Rain or snow falls on about 11 days. Snowfall averages about 0.5 in. Great for outdoor plans.
- Normal high
- 75°F
- Normal low
- 45°F
- Wet days
- 11
- 2.6 in total
- Snowfall
- 0.5 in
- normal snowfall
How May changes from start to finish
| May 1 | May 31 | |
|---|---|---|
| Normal high | 69°F | 81°F |
| Normal low | 39°F | 50°F |
| Chance of a wet day | 30% | 34% |
| Sunrise / sunset | 5:57 am / 7:54 pm | 5:31 am / 8:21 pm |
| Daylight | 13.9 h | 14.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Mountain Time).
A typical May day
- 6 am48°Fdew point 38°F
- 9 am59°Fdew point 38°F
- Noon66°Fdew point 36°F
- 3 pm67°Fdew point 35°F
- 6 pm63°Fdew point 38°F
- 9 pm54°Fdew point 39°F
NOAA hourly normals (local standard time) from Denver Intl Airport (41 mi away); average wind 11 mph; clear or few clouds in 29% of daytime hours, mostly cloudy or overcast in 54%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F15 of 31
- Hot dayshigh 90°F or more2 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow11 of 31
- Notable rainat least 0.10 in6 of 31
- Freezing nightslow 32°F or below2 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per May, counted from daily records for each year 1991-2020.
Rain and snow in May
Normal precipitation is 2.6 in; a dry May brings about 1.6 in and a wet one about 2.9 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more. Normal snowfall is 0.5 in.
How May varies from year to year
- Warmest May, 1991-20202006: average high 82°F
- Coolest May1995: average high 61°F
- Wettest May2017: 7.5 in
- Driest May1992: 0.7 in
- Highest reading101°F (May 29, 2003)
- Lowest reading21°F (May 2, 2013)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
May compared with April and June
| April | May | June | |
|---|---|---|---|
| Normal high | 66°F | 75°F | 86°F |
| Normal low | 35°F | 45°F | 54°F |
| Wet days | 8 | 11 | 8 |
| Comfortable days | 16 | 15 | 7 |
| Daylight | 13.3 h | 14.4 h | 15.0 h |
Highs change by +9°F from April and +11°F into June.
Nearby alternatives in May
- Cooler: Estes Park, CO43 mi · high 60°F · 12 wet days
How Greeley ranks in May
- Normal high199th warmest of 378 cities; 2nd of 17 in Colorado
- Wet days211th driest of 378
- Comfortable days96th most of 339
What to pack for Greeley in May
- Layers – afternoons near 75°F but nights near 45°F
- A rain jacket or umbrella – rain or snow on about 11 days
- Sunglasses and sunscreen – about 14.4 hours of daylight and highs near 75°F
Frost in May
The last spring frost typically comes around May 2; in 1 year in 10 it comes after May 14. All frost dates for Greeley.
Heating and cooling
May has 202 heating degree days and 35 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is Greeley in May?
The normal high is 75°F and the normal low is 45°F. From 1991 to 2020 the hottest May reading was 101°F (May 29, 2003).
Does it rain a lot in Greeley in May?
About 11 days in May have at least 0.01 in of precipitation, and the normal total is 2.7 in. The wettest May in 1991-2020 was in 2017 (7.5 in); the driest was in 1992 (0.7 in).
Does it snow in Greeley in May?
Yes. Normal snowfall in May is 0.5 in.
Is May a good time to visit Greeley?
May ranks 2nd of 12 months on our comfort score for Greeley (72 out of 100). It has about 15 comfortable days and about 2 days at 90°F or hotter. The best months are April and May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth and frost dates: Greeley Unc (USC00053553), 1.6 mi SSE of the city center, 4,715 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Denver Intl Airport (USW00003017), 41 mi S of the city center, 5,414 ft (740 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Cloud cover: Aurora Buckley Fld ANGB (USW00023036), 49 mi S of the city center, 5,663 ft (989 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Denver International Airport (725650-03017), 40 mi S of the city center, 5,404 ft (730 ft higher than the city). Hourly observations, 1991-2020.