Alamosa weather in August: Alamosa, Colorado: normal highs, lows, rain and records for August
Alamosa in August has a normal high of 81°F and a normal low of 46°F, a daily mean of 63°F, falling from 82°F on the 1st to 79°F by the 31st. Measurable precipitation falls on 10 days in a normal August, 1.29 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 27°C and low of 8°C, 33 mm of precipitation in August.
- 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 August?
The normal high is 81°F and the normal low 46°F, for a daily mean of 63.2°F. August is 2.1°F cooler than July and 7.3°F warmer than September. August is the 2nd warmest month of the year in Alamosa and the wettest. Across the month the normal high falls 3°F, from 82°F on August 1 to 79°F on August 31. From one year to the next August's mean temperature typically moves about 1.5°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 62°F and 65°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 31%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 82°F | 48°F | 30% | 11% |
| August 8 | 82°F | 47°F | 30% | 11% |
| August 15 | 81°F | 46°F | 30% | 11% |
| August 22 | 80°F | 45°F | 30% | 10% |
| August 31 | 79°F | 43°F | 28% | 10% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 82°F | 48°F | 30% | 11% | 14 h 10 min |
| August 2 | 82°F | 48°F | 30% | 11% | 14 h |
| August 3 | 82°F | 48°F | 30% | 11% | 14 h |
| August 4 | 82°F | 48°F | 31% | 11% | 14 h |
| August 5 | 82°F | 48°F | 31% | 11% | 14 h |
| August 6 | 82°F | 48°F | 31% | 11% | 14 h |
| August 7 | 82°F | 47°F | 31% | 11% | 13 h 50 min |
| August 8 | 82°F | 47°F | 30% | 11% | 13 h 50 min |
| August 9 | 81°F | 47°F | 30% | 11% | 13 h 50 min |
| August 10 | 81°F | 47°F | 30% | 11% | 13 h 50 min |
| August 11 | 81°F | 47°F | 30% | 11% | 13 h 50 min |
| August 12 | 81°F | 47°F | 30% | 11% | 13 h 50 min |
| August 13 | 81°F | 47°F | 30% | 11% | 13 h 40 min |
| August 14 | 81°F | 46°F | 30% | 11% | 13 h 40 min |
| August 15 | 81°F | 46°F | 30% | 11% | 13 h 40 min |
| August 16 | 81°F | 46°F | 30% | 11% | 13 h 40 min |
| August 17 | 80°F | 46°F | 30% | 11% | 13 h 30 min |
| August 18 | 80°F | 46°F | 30% | 11% | 13 h 30 min |
| August 19 | 80°F | 46°F | 30% | 11% | 13 h 30 min |
| August 20 | 80°F | 45°F | 30% | 11% | 13 h 30 min |
| August 21 | 80°F | 45°F | 30% | 11% | 13 h 30 min |
| August 22 | 80°F | 45°F | 30% | 10% | 13 h 20 min |
| August 23 | 80°F | 45°F | 30% | 10% | 13 h 20 min |
| August 24 | 80°F | 44°F | 30% | 10% | 13 h 20 min |
| August 25 | 79°F | 44°F | 30% | 10% | 13 h 20 min |
| August 26 | 79°F | 44°F | 30% | 10% | 13 h 20 min |
| August 27 | 79°F | 44°F | 29% | 10% | 13 h 10 min |
| August 28 | 79°F | 44°F | 29% | 10% | 13 h 10 min |
| August 29 | 79°F | 43°F | 29% | 10% | 13 h 10 min |
| August 30 | 79°F | 43°F | 29% | 10% | 13 h 10 min |
| August 31 | 79°F | 43°F | 28% | 10% | 13 h |
- Normal high
- 81°FAugust average
- Normal low
- 46°FAugust average
- Precipitation
- 1.29 inmonth total
- Days with precipitation
- 100.01 inch or more
- Daylight
- 14 h 10 min to 13 hAugust 1 to August 31
- Days at 70°F or more
- 30
- Days at 80°F or more
- 20
- 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 in Alamosa in August?
On a given August day the chance of 0.01 inch or more is 30% on average, highest around August 4 (31%). In all, 1.29 in falls on 10 days of a normal August.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023061.
How humid and windy is Alamosa in August?
At 3 p.m. the normal temperature is 76°F with 26% relative humidity and a dew point of 38°F; at 6 a.m. it is 45°F with 85% humidity. The wind averages 6.1 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 | 41°F | 85% | 2.7 mph | 81% |
| 9 a.m. | 62°F | 44°F | 52% | 3.7 mph | 85% |
| noon | 74°F | 41°F | 31% | 6.2 mph | 89% |
| 3 p.m. | 76°F | 38°F | 26% | 10.2 mph | 75% |
| 6 p.m. | 69°F | 42°F | 38% | 9.4 mph | – |
| 9 p.m. | 58°F | 43°F | 58% | 7.2 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 August in Alamosa?
The warmest August temperature on Alamosa's official record (since 1906) is 93°F, on August 4, 2026; the coldest is 29°F, on August 21, 1964. The wettest August brought 5.40 in (1993).
The August mean against the 1991-2020 normal of 63.2°F: 2021 64.7°F (+1.5), 2022 64.5°F (+1.3), 2023 65.7°F (+2.5), 2024 66.1°F (+2.9), 2025 64.3°F (+1.1), 2026 67.5°F (+4.3). 6 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 64.7°F | +1.5°F | 0.10 in |
| 2022 | 64.5°F | +1.3°F | 3.80 in |
| 2023 | 65.7°F | +2.5°F | 0.39 in |
| 2024 | 66.1°F | +2.9°F | 1.80 in |
| 2025 | 64.3°F | +1.1°F | 0.40 in |
| 2026 | 67.5°F | +4.3°F | 0.18 in |
Source: records: ACIS, NWS threaded record ALSthr; recent months: ACIS, station USW00023061. Records and recent months use complete months only.
How does August in Alamosa compare across Colorado?
Across the 125 places PlainClimate covers in Colorado, August normal highs run from 68°F in Leadville to 93°F in Lamar; Alamosa's is 81°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.