Alamosa weather in May: Alamosa, Colorado: normal highs, lows, rain and records for May
Alamosa in May has a normal high of 70°F and a normal low of 34°F, a daily mean of 52°F, rising from 64°F on the 1st to 76°F by the 31st. Measurable precipitation falls on 6 days in a normal May, 0.60 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 21°C and low of 1°C, 15 mm of precipitation and 2 cm of snow in May.
- NOAA stationAlamosa-Bergman Field
- Station IDUSW00023061
- Location37.44°N 105.86°W
- Elevation7,533 ft (2,296 m)
- From the center3 miles
- Population9,906
- Jan 35° -1°
- Feb 41° 7°
- Mar 53° 18°
- Apr 60° 25°
- May 70° 34°
- Jun 80° 41°
- Jul 83° 47°
- Aug 81° 46°
- Sep 74° 37°
- Oct 63° 25°
- Nov 49° 12°
- Dec 35° 1°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Alamosa in May?
The normal high is 70°F and the normal low 34°F, for a daily mean of 51.7°F. May is 9.1°F warmer than April and 8.9°F cooler than June. May is the 5th warmest month of the year in Alamosa and the 5th wettest. Across the month the normal high rises 12°F, from 64°F on May 1 to 76°F on May 31. From one year to the next May's mean temperature typically moves about 2.3°F either way (NOAA's standard deviation), so roughly two Mays in three average between 49°F and 54°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 18%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 64°F | 30°F | 18% | 6% |
| May 8 | 67°F | 32°F | 18% | 6% |
| May 15 | 69°F | 34°F | 18% | 6% |
| May 22 | 72°F | 35°F | 17% | 6% |
| May 31 | 76°F | 37°F | 15% | 5% |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 64°F | 30°F | 18% | 6% | 13 h 40 min |
| May 2 | 64°F | 30°F | 18% | 6% | 13 h 40 min |
| May 3 | 65°F | 30°F | 18% | 6% | 13 h 50 min |
| May 4 | 65°F | 31°F | 18% | 6% | 13 h 50 min |
| May 5 | 65°F | 31°F | 18% | 6% | 13 h 50 min |
| May 6 | 66°F | 31°F | 18% | 6% | 13 h 50 min |
| May 7 | 66°F | 31°F | 18% | 6% | 13 h 50 min |
| May 8 | 67°F | 32°F | 18% | 6% | 14 h |
| May 9 | 67°F | 32°F | 18% | 6% | 14 h |
| May 10 | 67°F | 32°F | 18% | 6% | 14 h |
| May 11 | 68°F | 33°F | 18% | 6% | 14 h |
| May 12 | 68°F | 33°F | 18% | 6% | 14 h |
| May 13 | 69°F | 33°F | 18% | 6% | 14 h 10 min |
| May 14 | 69°F | 33°F | 18% | 6% | 14 h 10 min |
| May 15 | 69°F | 34°F | 18% | 6% | 14 h 10 min |
| May 16 | 70°F | 34°F | 18% | 6% | 14 h 10 min |
| May 17 | 70°F | 34°F | 18% | 6% | 14 h 10 min |
| May 18 | 71°F | 34°F | 18% | 6% | 14 h 10 min |
| May 19 | 71°F | 35°F | 17% | 6% | 14 h 20 min |
| May 20 | 71°F | 35°F | 17% | 6% | 14 h 20 min |
| May 21 | 72°F | 35°F | 17% | 6% | 14 h 20 min |
| May 22 | 72°F | 35°F | 17% | 6% | 14 h 20 min |
| May 23 | 73°F | 35°F | 17% | 6% | 14 h 20 min |
| May 24 | 73°F | 36°F | 17% | 6% | 14 h 20 min |
| May 25 | 73°F | 36°F | 17% | 6% | 14 h 20 min |
| May 26 | 74°F | 36°F | 16% | 6% | 14 h 30 min |
| May 27 | 74°F | 36°F | 16% | 5% | 14 h 30 min |
| May 28 | 75°F | 37°F | 16% | 5% | 14 h 30 min |
| May 29 | 75°F | 37°F | 16% | 5% | 14 h 30 min |
| May 30 | 75°F | 37°F | 15% | 5% | 14 h 30 min |
| May 31 | 76°F | 37°F | 15% | 5% | 14 h 30 min |
- Normal high
- 70°FMay average
- Normal low
- 34°FMay average
- Precipitation
- 0.60 inmonth total
- Days with precipitation
- 60.01 inch or more
- Snowfall
- 0.8 inmonth total
- Nights at 32°F or colder
- 13
- Daylight
- 13 h 40 min to 14 h 30 minMay 1 to May 31
- Days at 70°F or more
- 18
- Days at 80°F or more
- 3
- Sunshine
- 82%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00023061; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Alamosa in May?
On a given May day the chance of 0.01 inch or more is 17% on average, highest around May 9 (18%). In all, 0.60 in falls on 6 days of a normal May.
In a normal May in Alamosa, 13 nights fall to freezing and snowfall averages 0.8 inches.
Snow falls on 1 day in a normal May.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023061.
How humid and windy is Alamosa in May?
At 3 p.m. the normal temperature is 72°F with 18% relative humidity and a dew point of 26°F; at 6 a.m. it is 45°F with 63% humidity. The wind averages 9.2 mph, most often from the southwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 45°F | 33°F | 63% | 3.8 mph | 89% |
| 9 a.m. | 61°F | 32°F | 33% | 7.5 mph | 90% |
| noon | 71°F | 26°F | 19% | 12.3 mph | 83% |
| 3 p.m. | 72°F | 26°F | 18% | 15.4 mph | 78% |
| 6 p.m. | 68°F | 28°F | 22% | 13.8 mph | – |
| 9 p.m. | 55°F | 32°F | 41% | 8.5 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00023061. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for May in Alamosa?
The warmest May temperature on Alamosa's official record (since 1906) is 90°F, on May 31, 2002; the coldest is 11°F, on May 1, 1967. The wettest May brought 2.97 in (1935); the snowiest, 13.5 inches (1978).
The May mean against the 1991-2020 normal of 51.7°F: 2021 52.1°F (+0.4), 2022 53.3°F (+1.6), 2023 52.9°F (+1.2), 2024 50.4°F (−1.3), 2025 50.5°F (−1.2), 2026 51.9°F (+0.2). 4 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 52.1°F | +0.4°F | 1.79 in |
| 2022 | 53.3°F | +1.6°F | 0.39 in |
| 2023 | 52.9°F | +1.2°F | 0.86 in |
| 2024 | 50.4°F | −1.3°F | 1.70 in |
| 2025 | 50.5°F | −1.2°F | 2.04 in |
| 2026 | 51.9°F | +0.2°F | 0.28 in |
Source: records: ACIS, NWS threaded record ALSthr; recent months: ACIS, station USW00023061. Records and recent months use complete months only.
How does May in Alamosa compare across Colorado?
Across the 125 places PlainClimate covers in Colorado, May normal highs run from 54°F in Leadville to 80°F in Lamar; Alamosa's is 70°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.