Fresno, CA

California · Records since 1887–2026

☀️ 85°F Feels like 82°
Currently in Fresno
As of 6:45 PM PDT

Records for September 26

🔥 Record High

107°F

September 26, 1963

+20° from 87° normal

❄ Record Low

43°F

September 26, 1948

-18° from 61° normal
🌞 Normal high: 87°F 🌑 Normal low: 61°F 1991–2020 normals

All-Time Records — Fresno

🔥
115°F
Hottest Day Ever
Jul 8, 1905
❄
17°F
Coldest Day Ever
Jan 6, 1913
🌧
3.55"
Wettest Day Ever
Nov 18, 1885
☃
2.5"
Most Snow in One Day
Jan 12, 1930

First & Last Dates — Fresno

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)
340 days
Longest growing season
2016
216 days
Shortest growing season
1972
311 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 26

# Temp Date
🏆 107°F September 26, 1963
2 101°F September 26, 2009
3 101°F September 26, 1887
4 100°F September 26, 1888
5 99°F September 26, 2022
6 99°F September 26, 1980
7 98°F September 26, 2016
8 98°F September 26, 2008
9 98°F September 26, 1978
10 98°F September 26, 1968

Top 5 Record Lows — September 26

# Temp Date
🥶 43°F September 26, 1948
2 47°F September 26, 1934
3 47°F September 26, 1924
4 48°F September 26, 1949
5 48°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 1887–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Fresno

threshold: 105°F (90th percentile of historical Jun–Aug highs)
4.4
Avg heat wave length
days (historical)
109°
Avg peak temp
during heat waves
50
Dangerous nights 2026
Overnights ≥ 70°F
2
Heat waves 2026
so far

Days ≥ 90°F Per Year

1887–2026
108
2026 so far
105
Avg/year 1970–2025
118
Avg/year (last 10 complete)
142
Most in a year (2014)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Fresno

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 17, 1988 – Jul 30, 1988 14 108°F (Jul 17) 106°F 74°F
2 Jul 2, 2024 – Jul 14, 2024 13 114°F (Jul 7) 110°F 78°F
3 Jul 16, 2006 – Jul 27, 2006 12 113°F (Jul 23) 110°F 80°F
4 Jul 18, 1931 – Jul 27, 1931 10 113°F (Jul 26) 109°F 75°F
5 Jul 28, 1889 – Aug 6, 1889 10 111°F (Jul 30) 108°F 68°F
6 Sep 1, 2022 – Sep 9, 2022 9 114°F (Sep 6) 108°F 77°F
7 Jul 6, 1896 – Jul 14, 1896 9 111°F (Jul 9) 108°F 75°F
8 Jul 21, 1980 – Jul 29, 1980 9 111°F (Jul 26) 108°F 75°F
9 Jul 13, 2005 – Jul 21, 2005 9 109°F (Jul 16) 107°F 76°F
10 Jul 3, 1905 – Jul 10, 1905 8 115°F (Jul 8) 110°F 73°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

58
2026 total
above-normal nights
29.2
Avg / summer
1970–2020
63
Most in a summer
2021

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 (1881–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1881, annual totals have trended +0.12" per decade, about +1.7" 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 Fresno is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

4.54"
2026 YTD
Normal: 7.75"
-3.21"
0.00"
September so far
September normal: 0.05"
-0.05"
0
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Fresno is 3.21" behind the normal pace

Period Review — Aug 26 – Sep 25, 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)
78.0°F
Average temperature
38th-warmest of 140
-0.5°
vs. average
Normal: 78.5°F (1991–2020)

Average Temperature by Year — Aug 26 – Sep 25

1887–2026 · 2026 highlighted · trend +0.34° per decade (warming since 1887)

Precipitation by Year — Aug 26 – Sep 25

1882–2025 · 2026 highlighted

Warmest Aug 26 – Sep 25 on Record

# Year Avg Temp
1 2022 83.1°F
2 2014 82.8°F
3 2021 82.2°F
4 1888 82.2°F
5 1984 82.1°F
6 2011 81.5°F
7 2012 81.3°F
8 2009 81.2°F
9 1922 80.9°F
10 2025 80.8°F

Coolest Aug 26 – Sep 25 on Record

# Year Avg Temp
1 1895 68.8°F
2 1907 70.5°F
3 1900 70.6°F
4 1941 70.9°F
5 1927 71.0°F
6 1965 71.1°F
7 1893 71.1°F
8 1954 71.3°F
9 1925 71.6°F
10 1964 71.8°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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