Climate Comfort Score
N/A
NOAA 1991-2020 normals
NOAA 1991–2020 normals Incorporated place · exact Census match 74°F annual avg Public-domain federal data
Clewiston, FL Climate: Temperature & Rain by Month
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 74°F
- Avg annual temp
- 46.2"
- Annual precip
30-year climate normals (1991-2020) from Clewiston's primary NOAA station, CLEWISTON #2.
The climate verdict for Clewiston
Warm-season cooling demand defines Clewiston, Florida, running at more than twice its heating total. The NOAA normal records an annual average of 74°F. August is the warmest month at 83°F and January the coldest at 62°F.
- 74°F
- yearly average temperature, NOAA normal
- 46.2"
- annual precipitation
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
74°F (23°C)
Avg High
84°F
Avg Low
64°F
Annual Precip
46.2"
Clewiston sits in Florida, the #1 hottest U.S. state at 72.6°F statewide annual average - see all 50 hottest states ranked by NOAA normals
Avg Annual Temperature
74°F
30-year mean (NOAA NCEI)
Annual Precipitation
46.2"
Liquid-equivalent total
How Clewiston compares with its closest stations
Against the 6 closest stations in the record, Clewiston averages 74°F a year, warmer than Moore Haven Lock, FL (73°F) and Ortona Lock, FL (73°F).
Corpus-relative placement
Where Clewiston sits across the climate record
These comparisons place this primary-station normal among station-mapped locations with the same NOAA 1991–2020 fields.
- Annual temperature
- Warmer than 98%
- of 6,861 measured location normals.
- Annual precipitation
- Wetter than 71%
- of 6,352 measured location normals.
- Seasonal temperature swing
- Larger than 3%
- of 6,861 complete location-year normals.
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 74°F (23°C) | 51°F (11°C) | 62°F (17°C) | 2.1" | 1.2 | 0.0 |
| February | 77°F (25°C) | 54°F (12°C) | 66°F (19°C) | 1.8" | 0.4 | 0.6 |
| March | 80°F (27°C) | 57°F (14°C) | 68°F (20°C) | 2.3" | 0.0 | 1.3 |
| April | 85°F (29°C) | 62°F (17°C) | 73°F (23°C) | 2.4" | 0.0 | 5.9 |
| May | 88°F (31°C) | 67°F (20°C) | 78°F (26°C) | 4.3" | 0.0 | 13.8 |
| June | 90°F (32°C) | 72°F (22°C) | 81°F (27°C) | 7.2" | 0.0 | 19.5 |
| July | 92°F (33°C) | 74°F (23°C) | 83°F (28°C) | 7.3" | 0.0 | 23.9 |
| August | 92°F (33°C) | 74°F (23°C) | 83°F (28°C) | 7.9" | 0.0 | 24.5 |
| September | 90°F (32°C) | 73°F (23°C) | 81°F (27°C) | 6.2" | 0.0 | 18.6 |
| October | 87°F (30°C) | 68°F (20°C) | 77°F (25°C) | 2.1" | 0.0 | 6.0 |
| November | 81°F (27°C) | 59°F (15°C) | 70°F (21°C) | 1.1" | 0.0 | 1.3 |
| December | 76°F (24°C) | 54°F (12°C) | 65°F (18°C) | 1.7" | 0.5 | 0.1 |
The year, day by day
The year in Clewiston runs from a mild 51°F around January 11 to 92°F at the peak near July 15, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from June 10 through September 16, covering 99 dates. The broader mild season, normal highs of 70°F or more, runs January 1 to December 31.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 51°F around January 11.
Where the wet dates fall
The likeliest wet date is August 22, when 49% of years recorded at least a hundredth of an inch. The driest is January 6 at 10%. Summed across the calendar, that is about 91 wet dates a year.
The widest day
March 5 carries the biggest normal gap between afternoon and dawn, 24°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Clewiston.
Where Clewiston Stands Nationally
Summers here run among the most heat-heavy normals calendars in the country: on about 99 days a year the normal daily high itself reaches 90°F — a count fewer than one station in ten exceeds.
Standing computed against the distribution of 6,860 NOAA 1991–2020 normals stations in the PlainClimate database; only nationally notable standings are shown.
Monthly Precipitation
Average monthly rainfall
January 2.1"
3.3 days with precipitation
February 1.8"
4.0 days with precipitation
March 2.3"
4.5 days with precipitation
April 2.4"
4.6 days with precipitation
May 4.3"
6.5 days with precipitation
June 7.2"
12.9 days with precipitation
July 7.3"
14.0 days with precipitation
August 7.9"
15.1 days with precipitation
September 6.2"
12.7 days with precipitation
October 2.1"
5.2 days with precipitation
November 1.1"
3.9 days with precipitation
December 1.7"
4.4 days with precipitation
Clewiston runs a summer-peaked wet season
48% of Clewiston's yearly precipitation falls in June, July and August alone, against the 25% an evenly spread year would give those three months. The wettest month is August at 7.9", on an unusually narrow 20.5°F seasonal spread. Warm-season convection and, across the Southwest, the North American monsoon produce this shape: rain arrives in short heavy bursts during the hottest part of the year rather than as long cool-season soaking.
- Wettest three months: August, July, June, taking 48% of the annual total between them.
- Driest month: November at 1.1".
- Winter share: 12% falls in December, January and February.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A summer-peaked label means the June-August share reaches 35%; it describes timing across an average year, not any single season, and says nothing about how heavy an individual storm can be.
When it rains in Clewiston, it arrives in quantity
46.2" of precipitation falls across only about 91 wet days here, averaging 0.51 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 91 a year, 25% of all days
- Average depth per wet day
- 0.51 inches
- Most wet days
- August, about 15
- Fewest wet days
- January, about 3
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Frost Dates & Growing Season
First Fall Freeze
January 13
50% probability date
Last Spring Freeze
January 27
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
403
Higher = more heating needed
Cooling Degree Days
3,698
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
Places with a similar climate profile
NOAA 1991–2020 annual normals connect this location to non-geographic peers. Temperature peers use annual mean temperature; energy peers use both heating and cooling degree days.
Closest annual-temperature peers
What Clewiston's climate means for you
Clewiston runs 74°F a year - peaking in August, coldest in January.
- Air conditioning drives the bills rather than the furnace: 3,698 cooling degree days against 403 for heating.
- See how Clewiston lines up against the rest of Florida and the national rankings. See rankings
Climate Guides
Data-derived climate profile
How Clewiston's climate pattern fits together
cooling led · wet · low swing
Warm-season load persists through a relatively even calendar in Clewiston. Cooling totals 3,698 degree days, more than double the 403 heating measure, and the 20.5°F seasonal range is compact rather than sharply divided.
Warm-season demand is paired with a wet annual normal: 46.2 inches of precipitation at Clewiston. Snowfall is not added to the interpretation because its annual value is missing. The month-by-month bars distinguish a concentrated wet season from moisture spread across the calendar.
Clewiston's 20.5°F seasonal spread is compact even though precipitation is abundant. August and January mark the typical warm and cold ends of the calendar. The annual average is 74°F. Temperature is relatively steady; the monthly rows show how rain and snow observations vary across the calendar.
A frost-free growing-season length is not available for Clewiston. That missing field is kept separate from the observed temperature and precipitation record rather than filled from a regional estimate.
These labels group NOAA 1991-2020 normals from Clewiston's primary station, so the summer figures are a thirty-year average rather than a ceiling: individual years have run hotter and will again. They are descriptive ranges, not an official NOAA classification or a forecast for any specific year.
The year in four calendar signals
- Warmest normal
- August
- At 83°F (28°C) this is a genuinely hot month, in the top third of US stations, and the daily average understates afternoon highs.
- Coldest normal
- January
- The coldest month still averages 62°F (17°C), above freezing, so this calendar has no hard winter.
- Rainfall rhythm
- August to November
- August is typically wettest; November is driest.
- Mild-temperature window
- January through December
- Monthly means sit between 55°F and 75°F in this window. Freezing days are still reported from January through December.
Frequently Asked Questions
What is the average temperature in Clewiston, FL? ▼
The average annual temperature in Clewiston, Florida is 74°F. The warmest month averages 92°F (33°C) and the coldest averages 51°F (11°C).
How much rain does Clewiston get? ▼
Clewiston receives 46.2 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
How many days above 90°F does Clewiston get? ▼
Clewiston averages about 115 days a year at or above 90°F, concentrated in August and the months either side of it. That is a count of days reaching the threshold, not a measure of how far above it they go.
How much energy does heating and cooling require in Clewiston? ▼
Clewiston has 403 heating degree days and 3,698 cooling degree days annually, a cooling-dominated climate. See our <a href="/guides/reading-weather-data" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Clewiston climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020). Figures on this page come from Clewiston's primary NOAA station (CLEWISTON #2, USC00081651).
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Clewiston's primary station: CLEWISTON #2 (USC00081651). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 1213000). The reproducible method is an exact normalized name-and-state match; unresolved is an upper bound on facilities because spelling variants can be missed.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.