Alamosa, CO

Colorado · Records since 1906–2026

☀️ 50°F Feels like 42°
Currently in Alamosa
As of 4:45 PM MST

Records for November 12

🔥 Record High

65°F

November 12, 1989

+15° from 50° normal

❄ Record Low

-5°F

November 12, 2012

-19° from 14° normal
🌞 Normal high: 50°F 🌑 Normal low: 14°F 1991–2020 normals

All-Time Records — Alamosa

🔥
96°F
Hottest Day Ever
Jul 5, 1989
❄
-50°F
Coldest Day Ever
Jan 28, 1948
🌧
1.77"
Wettest Day Ever
Sep 30, 1959
☃
15.8"
Most Snow in One Day
Dec 13, 1967

First & Last Dates — Alamosa

How early and how late each seasonal turning point has ever arrived, across the full period of record

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Range ever recorded Normal date (1991–2020)
124 days
Longest growing season
1958
10 days
Shortest growing season
2020
92 days
Normal growing season
1991–2020 average

Top 10 Record Highs — November 12

# Temp Date
🏆 65°F November 12, 1989
2 64°F November 12, 1954
3 63°F November 12, 1999
4 62°F November 12, 2007
5 62°F November 12, 1980
6 61°F November 12, 2009
7 61°F November 12, 1973
8 61°F November 12, 1971
9 61°F November 12, 1968
10 61°F November 12, 1944

Top 5 Record Lows — November 12

# Temp Date
🥶 -5°F November 12, 2012
2 -3°F November 12, 1992
3 0°F November 12, 2022
4 0°F November 12, 1979
5 0°F November 12, 1950
About this data — Records are sourced from the NOAA Threadex dataset via RCC ACIS, a quality-controlled record for long-term climate stations. Threadex adjusts for station relocations and observation-time changes, making records comparable across all years since 1906–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Alamosa

threshold: 87°F (90th percentile of historical Jun–Aug highs)
4.7
Avg heat wave length
days (historical)
90°
Avg peak temp
during heat waves
0
Dangerous nights 2026
Overnights ≥ 70°F
5
Heat waves 2026
so far

Days ≥ 90°F Per Year

1934–2026
24
2026 so far
5
Avg/year 1970–2025
8
Avg/year (last 10 complete)
20
Most in a year (2003)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Alamosa

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 1, 2003 – Jul 26, 2003 26 93°F (Jul 13) 90°F 48°F
2 Jul 11, 2023 – Jul 31, 2023 21 95°F (Jul 17) 90°F 48°F
3 Jul 24, 2026 – Aug 12, 2026 20 93°F (Jul 26) 90°F 51°F
4 Aug 13, 2020 – Aug 26, 2020 14 92°F (Aug 19) 89°F 44°F
5 Jun 17, 2012 – Jun 27, 2012 11 93°F (Jun 24) 91°F 46°F
6 Jun 23, 1990 – Jul 2, 1990 10 93°F (Jun 29) 90°F 47°F
7 Jul 14, 2005 – Jul 23, 2005 10 92°F (Jul 17) 91°F 49°F
8 Jul 1, 1989 – Jul 9, 1989 9 96°F (Jul 5) 92°F 42°F
9 Jun 10, 2021 – Jun 18, 2021 9 94°F (Jun 16) 90°F 43°F
10 Jul 30, 2024 – Aug 7, 2024 9 92°F (Aug 5) 90°F 48°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

Nights where the overnight low exceeded the 1991–2020 normal low

50
2026 total
above-normal nights
41.6
Avg / summer
1970–2020
67
Most in a summer
1957

Above-Normal Summer Nights Per Year

Average June–August Low by Decade

Overnight lows · complete decades only

Precipitation

Annual totals and trend across the full period of record · see this year's standing →

Monthly Precipitation — Last 24 Months

Blue = actual · dashed line = monthly normal

Annual Precipitation Per Year (1906–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1906, annual totals have trended +0.16" per decade, about +1.9" across the record.

Heavy Rain Days Per Year (≥ 1.0")

Compare year-to-year changes in days with heavy rainfall (≥ 1.0")

This Year — 2026

How Alamosa is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

240 of 314 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

7.88"
2026 YTD
Normal: 6.84"
+1.04"
0.38"
November so far
November normal: 0.37"
+0.01"
1
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Alamosa is 1.04" ahead of the normal pace

Period Review — Oct 11 – Nov 10, 2026

Any window, evaluated against every other year on record — 31 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
44.9°F
Average temperature
2nd-warmest of 95
+5.6°
vs. average
Normal: 39.4°F (1991–2020)
3.85"
Precipitation
1st-wettest of 95
+3.33"
vs. average
Normal: 0.52" · 740% of normal

Average Temperature by Year — Oct 11 – Nov 10

1932–2026 · 2026 highlighted · trend +0.10° per decade (warming since 1932)

Precipitation by Year — Oct 11 – Nov 10

1932–2026 · 2026 highlighted · trend +0.03" per decade (wetter since 1932)

Warmest Oct 11 – Nov 10 on Record

# Year Avg Temp
1 2016 46.2°F
2 2026 44.9°F
3 2014 44.0°F
4 1963 43.7°F
5 1988 43.7°F
6 1950 43.6°F
7 2005 43.2°F
8 2003 43.2°F
9 2025 43.1°F
10 1944 42.9°F

Coolest Oct 11 – Nov 10 on Record

# Year Avg Temp
1 2019 33.5°F
2 1993 34.2°F
3 1996 34.7°F
4 1991 34.9°F
5 1969 35.0°F
6 1943 35.0°F
7 1970 35.4°F
8 1956 35.9°F
9 1946 36.1°F
10 1997 36.8°F

Wettest Oct 11 – Nov 10 on Record

# Year Total
1 2026 3.85"
2 1972 2.40"
3 1969 2.37"
4 2024 2.25"
5 1998 1.89"
6 1986 1.57"
7 1990 1.47"
8 1960 1.46"
9 1961 1.46"
10 1953 1.38"

Driest Oct 11 – Nov 10 on Record

# Year Total
1 2001 0.00"
2 1954 0.00"
3 2007 0.01"
4 1983 0.01"
5 1973 0.01"
6 1964 0.01"
7 2017 0.02"
8 1950 0.02"
9 2023 0.03"
10 2022 0.03"
About this data. Pick any start and end date and this becomes the same kind of review as the Month and Fall tabs, just for exactly the window you asked for — the generalized version of the same engine, evaluated across every year on record. Average temperature is the mean of each day's (high + low) / 2; precipitation is the sum of daily totals. A year missing more than about a fifth of the window's days is excluded from the temperature ranking; any missing day excludes a year from the precipitation ranking, since an unreported day is unreported rain. Ranges that cross from December into January aren't supported yet. Normals are the 1991–2020 mean for the same window.
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