Stockton, CA

California · Records since 1893–2026

☁️ 74°F Feels like 70°
Currently in Stockton
As of 7:15 PM PDT

Records for September 26

🔥 Record High

100°F

September 26, 2016

+12° from 88° normal

❄ Record Low

40°F

September 26, 1948

-16° from 56° normal
🌞 Normal high: 88°F 🌑 Normal low: 56°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 26

# Temp Date
🏆 100°F September 26, 2016
2 100°F September 26, 2009
3 100°F September 26, 1963
4 100°F September 26, 1952
5 98°F September 26, 2018
6 98°F September 26, 1994
7 97°F September 26, 2015
8 97°F September 26, 2010
9 97°F September 26, 1954
10 96°F September 26, 1993

Top 5 Record Lows — September 26

# Temp Date
🥶 40°F September 26, 1948
2 45°F September 26, 1934
3 47°F September 26, 1973
4 47°F September 26, 1955
5 47°F September 26, 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 — 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
90
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

146 of 267 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

8.16"
2026 YTD
Normal: 8.92"
-0.76"
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 0.76" behind the normal pace

Period Review — Sep 1 – Sep 25, 2026

Any window, evaluated against every other year on record — 25 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
72.3°F
Average temperature
64th-warmest of 130
-1.4°
vs. average
Normal: 73.6°F (1991–2020)

Average Temperature by Year — Sep 1 – Sep 25

1893–2026 · 2026 highlighted · trend +0.51° per decade (warming since 1893)

Precipitation by Year — Sep 1 – Sep 25

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

Warmest Sep 1 – Sep 25 on Record

# Year Avg Temp
1 2022 78.8°F
2 1979 78.6°F
3 1984 77.8°F
4 1983 77.7°F
5 2020 76.8°F
6 1974 76.6°F
7 1991 76.4°F
8 1971 76.3°F
9 2025 76.0°F
10 2024 75.8°F

Coolest Sep 1 – Sep 25 on Record

# Year Avg Temp
1 1895 63.9°F
2 1893 64.5°F
3 1911 65.0°F
4 1907 65.3°F
5 1930 65.5°F
6 1901 66.0°F
7 1925 66.2°F
8 1927 66.5°F
9 1918 66.6°F
10 1896 66.8°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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