Roswell, NM

New Mexico · Records since 1893–2026

☀️ 96°F
Currently in Roswell
As of 12:00 PM MDT
🔥 5° below today's record of 101°F

Records for September 11

🔥 Record High

101°F

September 11, 2000

+12° from 89° normal

❄ Record Low

40°F

September 11, 1898

-23° from 63° normal
🌞 Normal high: 89°F 🌑 Normal low: 63°F 1991–2020 normals

All-Time Records — Roswell

🔥
114°F
Hottest Day Ever
Jun 27, 1994
❄
-24°F
Coldest Day Ever
Jan 11, 1962
🌧
5.78"
Wettest Day Ever
Oct 19, 2024
☃
12.4"
Most Snow in One Day
Dec 27, 2015

First & Last Dates — Roswell

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)
248 days
Longest growing season
2001
155 days
Shortest growing season
1913
212 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 101°F September 11, 2000
2 98°F September 11, 1895
3 97°F September 11, 2021
4 97°F September 11, 1999
5 96°F September 11, 1974
6 96°F September 11, 1930
7 96°F September 11, 1915
8 95°F September 11, 2025
9 95°F September 11, 2024
10 95°F September 11, 1988

Top 5 Record Lows — September 11

# Temp Date
🥶 40°F September 11, 1898
2 44°F September 11, 1894
3 45°F September 11, 1960
4 45°F September 11, 1956
5 48°F September 11, 1968
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 1893–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Roswell

threshold: 101°F (90th percentile of historical Jun–Aug highs)
4.6
Avg heat wave length
days (historical)
106°
Avg peak temp
during heat waves
55
Dangerous nights 2026
Overnights ≥ 70°F
4
Heat waves 2026
so far

Days ≥ 90°F Per Year

1893–2026
121
2026 so far
92
Avg/year 1970–2025
126
Avg/year (last 10 complete)
150
Most in a year (2020)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Roswell

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 2, 2016 – Jul 18, 2016 17 110°F (Jul 11) 106°F 71°F
2 Jun 16, 2023 – Jun 29, 2023 14 112°F (Jun 27) 107°F 72°F
3 Jun 19, 1998 – Jun 30, 1998 12 110°F (Jun 28) 106°F 64°F
4 Jul 11, 2023 – Jul 21, 2023 11 112°F (Jul 19) 107°F 74°F
5 Jul 8, 2020 – Jul 18, 2020 11 111°F (Jul 9) 108°F 76°F
6 Aug 15, 2024 – Aug 25, 2024 11 106°F (Aug 21) 104°F 73°F
7 Jun 25, 1957 – Jul 4, 1957 10 108°F (Jun 29) 106°F 68°F
8 Jun 9, 2017 – Jun 17, 2017 9 110°F (Jun 17) 105°F 62°F
9 Jun 13, 1896 – Jun 21, 1896 9 108°F (Jun 15) 105°F 69°F
10 Jul 27, 1944 – Aug 4, 1944 9 105°F (Aug 3) 102°F 69°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

53
2026 total
above-normal nights
21.4
Avg / summer
1970–2020
68
Most in a summer
2024

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 (1893–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1893, annual totals have trended -0.13" per decade, about -1.7" 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 Roswell is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

167 of 253 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

5.76"
2026 YTD
Normal: 8.24"
-2.48"
0.00"
September so far
September normal: 1.55"
-1.55"
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 · Roswell is 2.48" behind the normal pace

Period Review — Sep 1 – Sep 10, 2026

Any window, evaluated against every other year on record — 10 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
84.5°F
Average temperature
1st-warmest of 132
+8.1°
vs. average
Normal: 76.4°F (1991–2020)
0.00"
Precipitation
1st-driest of 133
-0.51"
vs. average
Normal: 0.51" · 0% of normal

Average Temperature by Year — Sep 1 – Sep 10

1894–2026 · 2026 highlighted · trend +0.34° per decade (warming since 1894)

Precipitation by Year — Sep 1 – Sep 10

1894–2026 · 2026 highlighted · trend -0.02" per decade (drier since 1894)

Warmest Sep 1 – Sep 10 on Record

# Year Avg Temp
1 2023 84.5°F
2 2026 84.5°F
3 2000 82.7°F
4 1983 82.1°F
5 2015 81.2°F
6 2019 80.8°F
7 2021 80.6°F
8 1964 79.9°F
9 1945 79.5°F
10 1951 79.4°F

Coolest Sep 1 – Sep 10 on Record

# Year Avg Temp
1 1935 67.6°F
2 2006 68.3°F
3 1918 68.8°F
4 1981 69.0°F
5 1904 69.1°F
6 1968 69.1°F
7 1932 69.3°F
8 1898 69.4°F
9 1962 69.8°F
10 1944 70.1°F

Wettest Sep 1 – Sep 10 on Record

# Year Total
1 1950 4.33"
2 1900 3.71"
3 1899 3.64"
4 1986 3.40"
5 2006 3.17"
6 1980 2.87"
7 1937 2.84"
8 1902 2.72"
9 1972 2.49"
10 1981 2.30"

Driest Sep 1 – Sep 10 on Record

# Year Total
1 2026 0.00"
2 2023 0.00"
3 2017 0.00"
4 2004 0.00"
5 2003 0.00"
6 1998 0.00"
7 1989 0.00"
8 1982 0.00"
9 1979 0.00"
10 1974 0.00"
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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