Redding, CA

California · Records since 1893–2026

☀️ 86°F
Currently in Redding
As of 11:30 AM PDT

Records for September 11

🔥 Record High

113°F

September 11, 1945

+19° from 94° normal

❄ Record Low

45°F

September 11, 1985

-14° from 59° normal
🌞 Normal high: 94°F 🌑 Normal low: 59°F 1991–2020 normals

All-Time Records — Redding

🔥
119°F
Hottest Day Ever
Jul 6, 2024
❄
16°F
Coldest Day Ever
Jan 17, 2012
🌧
7.30"
Wettest Day Ever
Dec 22, 1964
☃
16.0"
Most Snow in One Day
Dec 23, 1968

First & Last Dates — Redding

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)
352 days
Longest growing season
1941
174 days
Shortest growing season
1984
256 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 113°F September 11, 1945
2 108°F September 11, 1899
3 106°F September 11, 2015
4 106°F September 11, 1953
5 104°F September 11, 2009
6 104°F September 11, 1944
7 104°F September 11, 1922
8 103°F September 11, 2017
9 103°F September 11, 1983
10 103°F September 11, 1981

Top 5 Record Lows — September 11

# Temp Date
🥶 45°F September 11, 1985
2 47°F September 11, 1928
3 48°F September 11, 1926
4 49°F September 11, 1952
5 49°F September 11, 1911
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 1893–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Redding

threshold: 105°F (90th percentile of historical Jun–Aug highs)
4.4
Avg heat wave length
days (historical)
110°
Avg peak temp
during heat waves
20
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

Days ≥ 90°F Per Year

1893–2026
95
2026 so far
96
Avg/year 1970–2025
117
Avg/year (last 10 complete)
131
Most in a year (1970)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Redding

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 2, 2024 – Jul 13, 2024 12 119°F (Jul 6) 113°F 76°F
2 Jul 30, 1978 – Aug 10, 1978 12 117°F (Aug 7) 111°F 78°F
3 Aug 13, 1967 – Aug 23, 1967 11 110°F (Aug 14) 108°F 74°F
4 Jul 16, 1988 – Jul 24, 1988 9 118°F (Jul 20) 111°F 74°F
5 Jul 18, 1931 – Jul 26, 1931 9 112°F (Jul 19) 108°F 77°F
6 Aug 2, 1966 – Aug 10, 1966 9 110°F (Aug 6) 107°F 75°F
7 Aug 1, 2026 – Aug 9, 2026 9 109°F (Aug 7) 107°F 70°F
8 Jul 13, 2005 – Jul 20, 2005 8 112°F (Jul 18) 108°F 73°F
9 Aug 8, 1996 – Aug 15, 1996 8 111°F (Aug 12) 108°F 70°F
10 Aug 14, 2022 – Aug 21, 2022 8 110°F (Aug 16) 108°F 71°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
35.3
Avg / summer
1970–2020
75
Most in a summer
1933

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 (1893–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1893, annual totals have trended -0.43" per decade, about -5.7" 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 Redding is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

16.71"
2026 YTD
Normal: 21.41"
-4.70"
0.64"
September so far
September normal: 0.45"
+0.19"
4
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Redding is 4.70" behind the normal pace

Period Review — Aug 11 – Sep 10, 2026

Any window, evaluated against every other year on record — 31 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
76.5°F
Average temperature
23rd-coolest of 127
-2.9°
vs. average
Normal: 79.4°F (1991–2020)
0.64"
Precipitation
17th-wettest of 120
+0.44"
vs. average
Normal: 0.20" · 320% of normal

Average Temperature by Year — Aug 11 – Sep 10

1893–2026 · 2026 highlighted · trend +0.16° per decade (warming since 1893)

Precipitation by Year — Aug 11 – Sep 10

1893–2026 · 2026 highlighted

Warmest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 2022 86.8°F
2 1967 85.6°F
3 1921 85.4°F
4 2017 85.0°F
5 1969 84.4°F
6 1934 84.1°F
7 2020 83.9°F
8 1923 83.9°F
9 1958 83.9°F
10 1950 83.6°F

Coolest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1985 72.3°F
2 1899 72.9°F
3 1925 73.0°F
4 1979 73.1°F
5 1912 73.3°F
6 1954 73.7°F
7 2000 73.9°F
8 1900 73.9°F
9 1947 74.1°F
10 1990 74.8°F

Wettest Aug 11 – Sep 10 on Record

# Year Total
1 1976 4.89"
2 1985 4.85"
3 1912 3.62"
4 2000 3.08"
5 1978 2.85"
6 1954 2.20"
7 2023 1.65"
8 1900 1.64"
9 1893 1.46"
10 1979 1.44"

Driest Aug 11 – Sep 10 on Record

# Year Total
1 2022 0.00"
2 2019 0.00"
3 2018 0.00"
4 2016 0.00"
5 2015 0.00"
6 2014 0.00"
7 2013 0.00"
8 2012 0.00"
9 2011 0.00"
10 2009 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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