Winter Haven, FL

Florida · Records since 1941–2026

☁️ 85°F Feels like 99°
Currently in Winter Haven
As of 2:30 PM EDT

Records for September 11

🔥 Record High

96°F

September 11, 1989

+5° from 91° normal

❄ Record Low

66°F

September 11, 1968

-9° from 75° normal
🌞 Normal high: 91°F 🌑 Normal low: 75°F 1991–2020 normals

All-Time Records — Winter Haven

🔥
105°F
Hottest Day Ever
Oct 11, 2022
❄
19°F
Coldest Day Ever
Dec 24, 1989
🌧
10.05"
Wettest Day Ever
Jun 24, 1945
☃
0.0"
Most Snow in One Day
Sep 9, 2026

First & Last Dates — Winter Haven

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)

Top 10 Record Highs — September 11

# Temp Date
🏆 96°F September 11, 1989
2 95°F September 11, 2024
3 95°F September 11, 2023
4 95°F September 11, 2019
5 95°F September 11, 2010
6 95°F September 11, 1987
7 95°F September 11, 1985
8 95°F September 11, 1954
9 95°F September 11, 1948
10 95°F September 11, 1946

Top 5 Record Lows — September 11

# Temp Date
🥶 66°F September 11, 1968
2 67°F September 11, 1958
3 68°F September 11, 1990
4 68°F September 11, 1980
5 68°F September 11, 1956
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 1941–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Winter Haven

threshold: 96°F (90th percentile of historical Jun–Aug highs)
4.6
Avg heat wave length
days (historical)
98°
Avg peak temp
during heat waves
128
Dangerous nights 2026
Overnights ≥ 70°F
5
Heat waves 2026
so far

Days ≥ 90°F Per Year

1941–2026
125
2026 so far
118
Avg/year 1970–2025
138
Avg/year (last 10 complete)
166
Most in a year (1986)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Winter Haven

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 27, 1942 – Aug 10, 1942 15 99°F (Jul 30) 97°F 72°F
2 May 29, 1985 – Jun 11, 1985 14 103°F (Jun 4) 100°F 70°F
3 Jun 20, 1948 – Jul 1, 1948 12 100°F (Jun 25) 97°F 73°F
4 May 26, 2019 – Jun 5, 2019 11 99°F (Jun 4) 97°F 74°F
5 Aug 10, 2026 – Aug 19, 2026 10 99°F (Aug 19) 97°F 78°F
6 Aug 1, 1989 – Aug 9, 1989 9 99°F (Aug 6) 97°F 76°F
7 Jul 26, 2025 – Aug 1, 2025 7 100°F (Jul 29) 98°F 78°F
8 Jun 17, 2011 – Jun 23, 2011 7 99°F (Jun 21) 97°F 75°F
9 Aug 7, 2023 – Aug 13, 2023 7 99°F (Aug 11) 98°F 79°F
10 Jun 6, 1941 – Jun 12, 1941 7 98°F (Jun 10) 97°F 72°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
15.4
Avg / summer
1970–2020
61
Most in a summer
2019

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 (1941–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1941, annual totals have trended -0.97" per decade, about -8.1" 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 Winter Haven is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

36.81"
2026 YTD
Normal: 36.64"
+0.17"
1.60"
September so far
September normal: 5.31"
-3.71"
11
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Winter Haven is 0.17" ahead of 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

1941–2025 · 2026 highlighted · trend +0.24° per decade (warming since 1941)

Precipitation by Year — Sep 1 – Nov 30

1941–2025 · 2026 highlighted · trend -0.18" per decade (drier since 1941)

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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