Stockton, CA

California · Records since 1893–2026

☀️ 81°F
Currently in Stockton
As of 11:30 AM PDT

Records for September 11

🔥 Record High

103°F

September 11, 1979

+11° from 92° normal

❄ Record Low

48°F

September 11, 1985

-10° from 58° normal
🌞 Normal high: 92°F 🌑 Normal low: 58°F 1991–2020 normals

All-Time Records — Stockton

🔥
115°F
Hottest Day Ever
Sep 6, 2022
❄
16°F
Coldest Day Ever
Jan 11, 1949
🌧
3.13"
Wettest Day Ever
Sep 13, 1918
☃
3.0"
Most Snow in One Day
Jan 12, 1930

First & Last Dates — Stockton

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)
337 days
Longest growing season
1915
205 days
Shortest growing season
1964
284 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 103°F September 11, 1979
2 101°F September 11, 2017
3 101°F September 11, 1983
4 101°F September 11, 1960
5 100°F September 11, 2015
6 100°F September 11, 1970
7 100°F September 11, 1948
8 99°F September 11, 2014
9 99°F September 11, 2009
10 98°F September 11, 2002

Top 5 Record Lows — September 11

# Temp Date
🥶 48°F September 11, 1985
2 48°F September 11, 1952
3 48°F September 11, 1935
4 48°F September 11, 1897
5 49°F September 11, 1931
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.
2
days
Hot Streak
2 consecutive days at or above 101°F · since September 9
1 more day to heat wave status

Heat Wave Summary — Stockton

threshold: 101°F (90th percentile of historical Jun–Aug highs)
4.2
Avg heat wave length
days (historical)
106°
Avg peak temp
during heat waves
2
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

Days ≥ 90°F Per Year

1893–2026
85
2026 so far
68
Avg/year 1970–2025
102
Avg/year (last 10 complete)
129
Most in a year (2020)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Stockton

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 20, 1980 – Aug 2, 1980 14 111°F (Jul 25) 106°F 68°F
2 Jul 16, 2006 – Jul 27, 2006 12 115°F (Jul 23) 108°F 71°F
3 Jul 15, 1960 – Jul 25, 1960 11 111°F (Jul 19) 107°F 67°F
4 Jun 18, 1981 – Jun 28, 1981 11 108°F (Jun 19) 105°F 67°F
5 Sep 1, 2022 – Sep 9, 2022 9 115°F (Sep 6) 108°F 69°F
6 Jul 1, 2024 – Jul 8, 2024 8 111°F (Jul 6) 107°F 68°F
7 Jul 14, 1961 – Jul 21, 1961 8 110°F (Jul 18) 105°F 66°F
8 Aug 12, 1967 – Aug 19, 1967 8 107°F (Aug 18) 105°F 67°F
9 Jul 10, 1984 – Jul 17, 1984 8 107°F (Jul 13) 104°F 70°F
10 Jul 23, 2016 – Jul 30, 2016 8 105°F (Jul 24) 103°F 63°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

33
2026 total
above-normal nights
36.6
Avg / summer
1970–2020
63
Most in a summer
2024

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 -0.08" per decade, about -1.1" 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 Stockton 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

8.16"
2026 YTD
Normal: 8.88"
-0.72"
0.00"
September so far
September normal: 0.08"
-0.08"
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 · Stockton is 0.72" behind the normal pace

Period Review — Jun 12 – Sep 10, 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)
76.6°F
Average temperature
30th-warmest of 130
+0.3°
vs. average
Normal: 76.3°F (1991–2020)

Average Temperature by Year — Jun 12 – Sep 10

1893–2026 · 2026 highlighted · trend +0.49° per decade (warming since 1893)

Precipitation by Year — Jun 12 – Sep 10

1893–2025 · 2026 highlighted · trend -0.01" per decade (drier since 1893)

Warmest Jun 12 – Sep 10 on Record

# Year Avg Temp
1 1961 80.4°F
2 2017 80.2°F
3 2024 79.9°F
4 2022 79.4°F
5 1984 79.3°F
6 2020 79.2°F
7 1967 79.2°F
8 1977 78.8°F
9 2019 78.4°F
10 1981 78.3°F

Coolest Jun 12 – Sep 10 on Record

# Year Avg Temp
1 1912 69.8°F
2 1899 69.9°F
3 1911 70.1°F
4 1907 70.2°F
5 1898 70.2°F
6 1903 70.4°F
7 1919 70.5°F
8 1901 70.6°F
9 1910 70.8°F
10 1895 70.8°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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