Greenville, MS

Mississippi · Records since 1903–2026

☁️ 88°F Feels like 96°
Currently in Greenville
As of 1:30 PM CDT

Records for September 11

🔥 Record High

100°F

September 11, 1939

+11° from 89° normal

❄ Record Low

47°F

September 11, 1976

-19° from 66° normal
🌞 Normal high: 89°F 🌑 Normal low: 66°F 1991–2020 normals

All-Time Records — Greenville

🔥
110°F
Hottest Day Ever
Jul 29, 1930
❄
-2°F
Coldest Day Ever
Feb 2, 1951
🌧
8.95"
Wettest Day Ever
Sep 3, 2008
☃
10.0"
Most Snow in One Day
Dec 22, 1929

First & Last Dates — Greenville

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)
310 days
Longest growing season
1973
191 days
Shortest growing season
1926
247 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 100°F September 11, 1939
2 100°F September 11, 1936
3 99°F September 11, 1912
4 98°F September 11, 1909
5 97°F September 11, 1983
6 97°F September 11, 1927
7 97°F September 11, 1915
8 96°F September 11, 2008
9 96°F September 11, 2002
10 96°F September 11, 1947

Top 5 Record Lows — September 11

# Temp Date
🥶 47°F September 11, 1976
2 51°F September 11, 1940
3 52°F September 11, 1956
4 54°F September 11, 1993
5 54°F September 11, 1943
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 1903–2026. Climate normals represent the 1991–2020 average.
12
days
🔥 Heat Wave in Progress
12 consecutive days at or above 98°F · since August 30
Heat wave in progress (3+ days ≥ 98°F)

Heat Wave Summary — Greenville

threshold: 98°F (90th percentile of historical Jun–Aug highs)
4.9
Avg heat wave length
days (historical)
101°
Avg peak temp
during heat waves
94
Dangerous nights 2026
Overnights ≥ 70°F
3
Heat waves 2026
so far

Days ≥ 90°F Per Year

1903–2026
85
2026 so far
85
Avg/year 1970–2025
95
Avg/year (last 10 complete)
124
Most in a year (1925)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Greenville

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 26, 1930 – Aug 18, 1930 24 110°F (Jul 29) 102°F 74°F
2 Jun 30, 1980 – Jul 19, 1980 20 105°F (Jul 13) 103°F 78°F
3 Aug 5, 1936 – Aug 22, 1936 18 106°F (Aug 10) 101°F 74°F
4 Aug 30, 2026 – Sep 10, 2026 12 103°F (Sep 6) 100°F 72°F
5 Jun 27, 1925 – Jul 8, 1925 12 101°F (Jun 28) 99°F 72°F
6 Jun 27, 1978 – Jul 8, 1978 12 101°F (Jul 8) 100°F 76°F
7 Aug 8, 2007 – Aug 18, 2007 11 106°F (Aug 10) 102°F 74°F
8 Sep 1, 1925 – Sep 10, 1925 10 107°F (Sep 6) 103°F 71°F
9 Jun 23, 1914 – Jul 1, 1914 9 107°F (Jun 27) 101°F 75°F
10 Jul 31, 2011 – Aug 8, 2011 9 106°F (Aug 3) 102°F 78°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

58
2026 total
above-normal nights
43.1
Avg / summer
1970–2020
78
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 (1903–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1903, annual totals have trended -0.30" per decade, about -3.7" 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 Greenville is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

169 of 249 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

19.02"
2026 YTD
Normal: 33.19"
-14.17"
0.00"
September so far
September normal: 3.62"
-3.62"
5
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Greenville is 14.17" behind the normal pace

Period Review — Sep 1 – Nov 30, 2026

Any window, evaluated against every other year on record — 91 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
2026 is still under way for this window — totals and rankings appear once November 30 passes.

Average Temperature by Year — Sep 1 – Nov 30

1903–2025 · 2026 highlighted · trend -0.05° per decade (cooling since 1903)

Precipitation by Year — Sep 1 – Nov 30

1903–2025 · 2026 highlighted · trend +0.17" per decade (wetter since 1903)

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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