Harrison, AR

Arkansas · Records since 1892–2026

☁️ 80°F Feels like 88°
Currently in Harrison
As of 1:30 PM CDT

Records for September 11

🔥 Record High

100°F

September 11, 1912

+17° from 83° normal

❄ Record Low

40°F

September 11, 1959

-20° from 60° normal
🌞 Normal high: 83°F 🌑 Normal low: 60°F 1991–2020 normals

All-Time Records — Harrison

🔥
112°F
Hottest Day Ever
Aug 3, 2011
❄
-20°F
Coldest Day Ever
Feb 13, 1905
🌧
7.83"
Wettest Day Ever
Nov 4, 2024
☃
14.3"
Most Snow in One Day
Feb 15, 1993

First & Last Dates — Harrison

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)
261 days
Longest growing season
1998
131 days
Shortest growing season
1912
209 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 100°F September 11, 1912
2 99°F September 11, 1909
3 98°F September 11, 1928
4 97°F September 11, 1953
5 96°F September 11, 1956
6 96°F September 11, 1939
7 95°F September 11, 1946
8 94°F September 11, 1938
9 94°F September 11, 1923
10 94°F September 11, 1908

Top 5 Record Lows — September 11

# Temp Date
🥶 40°F September 11, 1959
2 41°F September 11, 1940
3 44°F September 11, 1948
4 44°F September 11, 1907
5 45°F September 11, 1976
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 1892–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Harrison

threshold: 98°F (90th percentile of historical Jun–Aug highs)
5.5
Avg heat wave length
days (historical)
103°
Avg peak temp
during heat waves
63
Dangerous nights 2026
Overnights ≥ 70°F
4
Heat waves 2026
so far

Days ≥ 90°F Per Year

1892–2026
71
2026 so far
50
Avg/year 1970–2025
42
Avg/year (last 10 complete)
106
Most in a year (1954)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Harrison

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 29, 1934 – Aug 16, 1934 19 112°F (Aug 9) 105°F 74°F
2 Aug 8, 1936 – Aug 24, 1936 17 111°F (Aug 10) 106°F 72°F
3 Jul 11, 1954 – Jul 27, 1954 17 110°F (Jul 14) 103°F 72°F
4 Jun 20, 1901 – Jul 5, 1901 16 105°F (Jul 4) 100°F 66°F
5 Jul 7, 1936 – Jul 20, 1936 14 112°F (Jul 18) 104°F 71°F
6 Jul 30, 1935 – Aug 12, 1935 14 106°F (Aug 7) 101°F 70°F
7 Aug 25, 1913 – Sep 5, 1913 12 106°F (Aug 31) 103°F 65°F
8 Jun 10, 1953 – Jun 21, 1953 12 102°F (Jun 13) 101°F 68°F
9 Jul 16, 1934 – Jul 26, 1934 11 108°F (Jul 24) 106°F 72°F
10 Jul 17, 1943 – Jul 27, 1943 11 106°F (Jul 22) 101°F 70°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

70
2026 total
above-normal nights
46.9
Avg / summer
1970–2020
77
Most in a summer
2010

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 (1892–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1892, annual totals have trended +0.96" per decade, about +12.8" 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 Harrison is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

33.11"
2026 YTD
Normal: 31.04"
+2.07"
0.00"
September so far
September normal: 4.06"
-4.06"
12
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Harrison is 2.07" ahead of the normal pace

Period Review — Sep 3 – Sep 10, 2026

Any window, evaluated against every other year on record — 8 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
86.2°F
Average temperature
1st-warmest of 120
+12.5°
vs. average
Normal: 73.7°F (1991–2020)
0.00"
Precipitation
1st-driest of 120
-1.15"
vs. average
Normal: 1.15" · 0% of normal

Average Temperature by Year — Sep 3 – Sep 10

1892–2026 · 2026 highlighted · trend +0.07° per decade (warming since 1892)

Precipitation by Year — Sep 3 – Sep 10

1892–2026 · 2026 highlighted · trend +0.01" per decade (wetter since 1892)

Warmest Sep 3 – Sep 10 on Record

# Year Avg Temp
1 2026 86.2°F
2 1939 84.8°F
3 1936 82.7°F
4 1925 82.6°F
5 1947 82.2°F
6 1990 81.2°F
7 1899 80.7°F
8 1998 80.6°F
9 1913 79.9°F
10 1980 79.7°F

Coolest Sep 3 – Sep 10 on Record

# Year Avg Temp
1 1974 62.4°F
2 1950 63.9°F
3 1934 65.4°F
4 1956 65.4°F
5 1904 65.6°F
6 1918 65.6°F
7 1967 65.8°F
8 1988 66.1°F
9 2024 67.3°F
10 1903 67.4°F

Wettest Sep 3 – Sep 10 on Record

# Year Total
1 1930 6.90"
2 2010 6.59"
3 2015 4.69"
4 1992 3.75"
5 1937 3.71"
6 2009 3.28"
7 2001 3.02"
8 1970 2.94"
9 1929 2.92"
10 1973 2.58"

Driest Sep 3 – Sep 10 on Record

# Year Total
1 2026 0.00"
2 2024 0.00"
3 2022 0.00"
4 2019 0.00"
5 2017 0.00"
6 2013 0.00"
7 2011 0.00"
8 2003 0.00"
9 2000 0.00"
10 1998 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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