Brainerd, MN

Minnesota · Records since 1898–2026

☁️ 83°F
Currently in Brainerd
As of 1:30 PM CDT

Records for September 11

🔥 Record High

95°F

September 11, 1931

+22° from 73° normal

❄ Record Low

30°F

September 11, 1917

-19° from 49° normal
🌞 Normal high: 73°F 🌑 Normal low: 49°F 1991–2020 normals

All-Time Records — Brainerd

🔥
106°F
Hottest Day Ever
Jul 10, 1936
❄
-54°F
Coldest Day Ever
Feb 2, 1996
🌧
6.38"
Wettest Day Ever
Jul 11, 2016
☃
24.0"
Most Snow in One Day
Mar 4, 1985

First & Last Dates — Brainerd

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)
165 days
Longest growing season
2024
44 days
Shortest growing season
1917
136 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 95°F September 11, 1931
2 88°F September 11, 2011
3 88°F September 11, 1948
4 88°F September 11, 1900
5 87°F September 11, 2012
6 86°F September 11, 1998
7 86°F September 11, 1988
8 86°F September 11, 1927
9 85°F September 11, 2005
10 85°F September 11, 1981

Top 5 Record Lows — September 11

# Temp Date
🥶 30°F September 11, 1917
2 31°F September 11, 1955
3 34°F September 11, 2020
4 34°F September 11, 1984
5 34°F September 11, 1922
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 1898–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Brainerd

threshold: 88°F (90th percentile of historical Jun–Aug highs)
4.2
Avg heat wave length
days (historical)
94°
Avg peak temp
during heat waves
3
Dangerous nights 2026
Overnights ≥ 70°F
2
Heat waves 2026
so far

Days ≥ 90°F Per Year

1899–2026
8
2026 so far
8
Avg/year 1970–2025
8
Avg/year (last 10 complete)
31
Most in a year (1988)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Brainerd

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 6, 1936 – Jul 18, 1936 13 106°F (Jul 10) 98°F 70°F
2 Jul 9, 2005 – Jul 17, 2005 9 96°F (Jul 16) 92°F 67°F
3 Jun 3, 2021 – Jun 10, 2021 8 100°F (Jun 4) 95°F 64°F
4 Jul 18, 1940 – Jul 25, 1940 8 98°F (Jul 22) 92°F 66°F
5 Jul 22, 1941 – Jul 29, 1941 8 97°F (Jul 22) 92°F 70°F
6 Jun 15, 1995 – Jun 22, 1995 8 96°F (Jun 17) 93°F 65°F
7 Jul 3, 1988 – Jul 9, 1988 7 102°F (Jul 6) 95°F 63°F
8 Jul 26, 1988 – Aug 1, 1988 7 101°F (Jul 27) 96°F 63°F
9 Jul 3, 1948 – Jul 9, 1948 7 97°F (Jul 5) 92°F 64°F
10 Aug 1, 1930 – Aug 7, 1930 7 96°F (Aug 3) 94°F 63°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

54
2026 total
above-normal nights
40.2
Avg / summer
1970–2020
63
Most in a summer
1935

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 (1887–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1887, annual totals have trended +0.57" per decade, about +7.9" 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 Brainerd is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

10.38"
2026 YTD
Normal: 18.93"
-8.55"
1.20"
September so far
September normal: 2.60"
-1.40"
2
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Brainerd is 8.55" behind the normal pace

Period Review — Jun 1 – Aug 31, 2026

Any window, evaluated against every other year on record — 92 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
69.1°F
Average temperature
17th-warmest of 107
+1.8°
vs. average
Normal: 67.2°F (1991–2020)

Average Temperature by Year — Jun 1 – Aug 31

1899–2026 · 2026 highlighted · trend +0.14° per decade (warming since 1899)

Precipitation by Year — Jun 1 – Aug 31

1899–2025 · 2026 highlighted · trend +0.06" per decade (wetter since 1899)

Warmest Jun 1 – Aug 31 on Record

# Year Avg Temp
1 2021 71.3°F
2 2020 71.1°F
3 1988 70.6°F
4 2006 70.4°F
5 1900 70.0°F
6 1970 70.0°F
7 1955 69.8°F
8 2007 69.7°F
9 2005 69.7°F
10 1933 69.6°F

Coolest Jun 1 – Aug 31 on Record

# Year Avg Temp
1 1917 59.6°F
2 1927 60.9°F
3 1924 61.0°F
4 1992 61.3°F
5 2004 62.8°F
6 1977 63.2°F
7 1926 63.3°F
8 1985 63.5°F
9 1950 63.6°F
10 1904 63.7°F
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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