Flint, MI

Michigan · Records since 1921–2026

☀️ 76°F
Currently in Flint
As of 2:30 PM

Records for September 11

🔥 Record High

95°F

September 11, 1931

+20° from 75° normal

❄ Record Low

36°F

September 11, 1958

-16° from 52° normal
🌞 Normal high: 75°F 🌑 Normal low: 52°F 1991–2020 normals

All-Time Records — Flint

🔥
108°F
Hottest Day Ever
Jul 13, 1936
❄
-25°F
Coldest Day Ever
Feb 20, 2015
🌧
6.04"
Wettest Day Ever
Sep 10, 1950
☃
14.5"
Most Snow in One Day
Jan 5, 2014

First & Last Dates — Flint

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)
188 days
Longest growing season
1985
119 days
Shortest growing season
1956
152 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 95°F September 11, 1931
2 92°F September 11, 2013
3 92°F September 11, 1952
4 89°F September 11, 1961
5 88°F September 11, 2019
6 88°F September 11, 1930
7 87°F September 11, 2005
8 86°F September 11, 1998
9 86°F September 11, 1978
10 86°F September 11, 1936

Top 5 Record Lows — September 11

# Temp Date
🥶 36°F September 11, 1958
2 36°F September 11, 1943
3 36°F September 11, 1924
4 37°F September 11, 1995
5 37°F September 11, 1993
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 1921–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Flint

threshold: 90°F (90th percentile of historical Jun–Aug highs)
4.5
Avg heat wave length
days (historical)
96°
Avg peak temp
during heat waves
7
Dangerous nights 2026
Overnights ≥ 70°F
2
Heat waves 2026
so far

Days ≥ 90°F Per Year

1921–2026
11
2026 so far
13
Avg/year 1970–2025
12
Avg/year (last 10 complete)
44
Most in a year (1934)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Flint

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 6, 1936 – Jul 18, 1936 13 108°F (Jul 8) 99°F 68°F
2 Jun 28, 2012 – Jul 7, 2012 10 100°F (Jun 28) 95°F 68°F
3 May 29, 1934 – Jun 6, 1934 9 104°F (Jun 1) 97°F 61°F
4 Jun 30, 1921 – Jul 8, 1921 9 102°F (Jul 4) 96°F 68°F
5 Jun 24, 1933 – Jul 2, 1933 9 100°F (Jun 27) 96°F 68°F
6 Aug 26, 1953 – Sep 3, 1953 9 97°F (Aug 31) 96°F 66°F
7 Jul 1, 2020 – Jul 9, 2020 9 97°F (Jul 3) 94°F 66°F
8 Jul 18, 1934 – Jul 25, 1934 8 105°F (Jul 24) 99°F 67°F
9 Jul 22, 1941 – Jul 29, 1941 8 99°F (Jul 25) 96°F 69°F
10 Jun 28, 1949 – Jul 5, 1949 8 99°F (Jul 1) 94°F 70°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

46
2026 total
above-normal nights
44.5
Avg / summer
1970–2020
66
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 (1921–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1921, annual totals have trended +0.40" per decade, about +4.2" 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 Flint is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

23.64"
2026 YTD
Normal: 23.06"
+0.58"
1.53"
September so far
September normal: 2.90"
-1.37"
3
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Flint is 0.58" ahead of 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)
71.1°F
Average temperature
15th-warmest of 106
+5.0°
vs. average
Normal: 66.1°F (1991–2020)
1.53"
Precipitation
25th-wettest of 106
+0.58"
vs. average
Normal: 0.95" · 161% of normal

Average Temperature by Year — Sep 1 – Sep 10

1921–2026 · 2026 highlighted · trend -0.12° per decade (cooling since 1921)

Precipitation by Year — Sep 1 – Sep 10

1921–2026 · 2026 highlighted · trend -0.03" per decade (drier since 1921)

Warmest Sep 1 – Sep 10 on Record

# Year Avg Temp
1 1933 77.3°F
2 2015 75.3°F
3 1971 74.5°F
4 1922 74.2°F
5 1961 74.2°F
6 1983 73.5°F
7 1985 73.0°F
8 1947 73.0°F
9 1921 72.9°F
10 2002 72.4°F

Coolest Sep 1 – Sep 10 on Record

# Year Avg Temp
1 1924 55.4°F
2 2017 57.2°F
3 2025 58.3°F
4 1935 59.1°F
5 1949 59.6°F
6 1975 60.0°F
7 1994 60.1°F
8 1993 60.2°F
9 1974 60.5°F
10 1951 60.6°F

Wettest Sep 1 – Sep 10 on Record

# Year Total
1 1985 6.51"
2 1950 6.04"
3 1989 3.95"
4 1932 3.69"
5 2015 3.11"
6 1981 2.80"
7 2008 2.79"
8 2020 2.71"
9 1943 2.59"
10 1987 2.58"

Driest Sep 1 – Sep 10 on Record

# Year Total
1 2022 0.00"
2 2009 0.00"
3 2002 0.00"
4 1994 0.00"
5 1979 0.00"
6 1978 0.00"
7 1967 0.00"
8 1999 0.01"
9 1973 0.01"
10 1982 0.06"
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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