Hanford, CA

California · Records since 1899–2026

☀️ 93°F
Currently in Hanford
As of 11:30 AM PDT

Records for September 11

🔥 Record High

105°F

September 11, 1951

+11° from 94° normal

❄ Record Low

42°F

September 11, 1952

-17° from 59° normal
🌞 Normal high: 94°F 🌑 Normal low: 59°F 1991–2020 normals

All-Time Records — Hanford

🔥
116°F
Hottest Day Ever
Jul 27, 1933
❄
14°F
Coldest Day Ever
Jan 7, 1913
🌧
2.70"
Wettest Day Ever
Feb 24, 2023
☃
0.0"
Most Snow in One Day
Jul 29, 2026

First & Last Dates — Hanford

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)
356 days
Longest growing season
1995
152 days
Shortest growing season
1917
281 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 105°F September 11, 1951
2 104°F September 11, 1904
3 101°F September 11, 2015
4 101°F September 11, 1939
5 101°F September 11, 1902
6 100°F September 11, 2014
7 100°F September 11, 1948
8 100°F September 11, 1944
9 100°F September 11, 1924
10 100°F September 11, 1923

Top 5 Record Lows — September 11

# Temp Date
🥶 42°F September 11, 1952
2 42°F September 11, 1906
3 48°F September 11, 1915
4 48°F September 11, 1901
5 49°F September 11, 2005
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 1899–2026. Climate normals represent the 1991–2020 average.
1
day
Hot Streak
1 consecutive day at or above 104°F · since September 10
2 more days to heat wave status

Heat Wave Summary — Hanford

threshold: 104°F (90th percentile of historical Jun–Aug highs)
4.8
Avg heat wave length
days (historical)
108°
Avg peak temp
during heat waves
11
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

Days ≥ 90°F Per Year

1899–2026
106
2026 so far
101
Avg/year 1970–2025
121
Avg/year (last 10 complete)
144
Most in a year (1922)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Hanford

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 13, 1936 – Jul 26, 1936 14 112°F (Jul 23) 108°F 70°F
2 Jul 7, 1919 – Jul 20, 1919 14 108°F (Jul 8) 105°F 66°F
3 Jul 2, 2024 – Jul 14, 2024 13 113°F (Jul 6) 109°F 71°F
4 Jul 17, 1931 – Jul 28, 1931 12 115°F (Jul 25) 110°F 72°F
5 Jul 2, 1931 – Jul 13, 1931 12 112°F (Jul 4) 107°F 68°F
6 Jul 5, 1921 – Jul 15, 1921 11 111°F (Jul 7) 106°F 66°F
7 Jul 11, 1933 – Jul 21, 1933 11 110°F (Jul 14) 108°F 70°F
8 Jul 29, 1936 – Aug 8, 1936 11 110°F (Aug 6) 107°F 69°F
9 Aug 1, 2026 – Aug 11, 2026 11 110°F (Aug 9) 106°F 66°F
10 Jul 6, 1906 – Jul 15, 1906 10 111°F (Jul 7) 108°F 66°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

62
2026 total
above-normal nights
39.2
Avg / summer
1970–2020
73
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 (1899–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1899, annual totals have trended +0.13" per decade, about +1.6" 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 Hanford is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

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

Precipitation, Year to Date

2.96"
2026 YTD
Normal: 5.65"
-2.69"
0.00"
September so far
September normal: 0.04"
-0.04"
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 · Hanford is 2.69" behind the normal pace

Period Review — Sep 3 – Sep 10, 2026

Any window, evaluated against every other year on record — 8 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
78.1°F
Average temperature
33rd-warmest of 117
+0.9°
vs. average
Normal: 77.2°F (1991–2020)
0.00"
Precipitation
1st-driest of 114
+0.00"
vs. average
Normal: 0.00"

Average Temperature by Year — Sep 3 – Sep 10

1899–2026 · 2026 highlighted · trend +0.50° per decade (warming since 1899)

Precipitation by Year — Sep 3 – Sep 10

1899–2026 · 2026 highlighted

Warmest Sep 3 – Sep 10 on Record

# Year Avg Temp
1 2022 89.1°F
2 2024 85.9°F
3 1923 84.8°F
4 2017 83.4°F
5 2021 82.2°F
6 1932 82.1°F
7 1944 81.8°F
8 1904 81.6°F
9 1998 81.4°F
10 1988 81.3°F

Coolest Sep 3 – Sep 10 on Record

# Year Avg Temp
1 1912 65.9°F
2 1914 66.7°F
3 1927 68.1°F
4 1920 68.5°F
5 1985 68.7°F
6 1901 69.0°F
7 1964 69.2°F
8 1940 69.7°F
9 1942 69.7°F
10 1938 69.9°F

Wettest Sep 3 – Sep 10 on Record

# Year Total
1 1978 1.08"
2 1975 0.93"
3 1958 0.68"
4 1972 0.16"
5 1969 0.14"
6 1971 0.02"
7 1976 0.01"
8 1997 0.01"
9 2013 0.01"
10 1899 0.00"

Driest Sep 3 – Sep 10 on Record

# Year Total
1 2026 0.00"
2 2025 0.00"
3 2024 0.00"
4 2023 0.00"
5 2022 0.00"
6 2021 0.00"
7 2020 0.00"
8 2019 0.00"
9 2018 0.00"
10 2017 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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