June is one of the warmer months of the year in Fort Smith, with average highs near 30.3°C and lows around 19.6°C (mean 25°C). It is about average for rainfall, averaging 111 mm of rainfall and 75% relative humidity across the period.
June is one of the warmer months of the year in Fort Smith. Across 45 years of records, the warmest June in Fort Smith was 2010 — when the month averaged 28°C — while the coldest was 1982 at 21.9°C. Typical June days reach 30.3°C with nights near 19.6°C. The long-term trend is warming, about 0.4°C per decade.
June is about average for rainfall in Fort Smith, averaging 111 mm of rainfall. The wettest June on record was 2000 with 270 mm, while the driest was 2011 at 30 mm.
Relative humidity in Fort Smith during June averages 75%. The most humid June was 1993 at 86%, and the least humid was 1988 at 55%.
June receives about 6.4 kWh/m²/day of solar energy in Fort Smith. The sunniest Junes were 2011 and 2012 at 7.2 kWh/m²/day, and the cloudiest was 2000 at 5.
Average wind speed in Fort Smith during June is 1.5 m/s. The windiest June was 1998 at 2 m/s, while the calmest was 1986 at 1.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 24.1°C | 24.8°C | 24.7°C | 25.9°C | 25.6°C | +1.5°C |
| Avg High | 29.5°C | 30.0°C | 30.1°C | 31.3°C | 30.8°C | +1.3°C |
| Avg Low | 18.7°C | 19.5°C | 19.3°C | 20.5°C | 20.3°C | +1.6°C |
| Avg Rain | 103 mm | 119 mm | 135 mm | 99 mm | 93 mm | -10 mm |
June temperatures in Fort Smith have risen by about 2°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 9.5°C (1983) to a record high of 41.8°C (2012).
Rainfall in June is about average for rainfall, averaging 111 mm, with a wettest year of 270 mm.
One of the best times to visit Fort Smith
June is one of the best times to visit Fort Smith. Expect days averaging 30.3°C and nights around 19.6°C (mean 25°C) — warmer than Fort Smith's yearly average — with higher rainfall (111 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 29.7°C | 25.4°C | 21.1°C | 33.2°C | 15.8°C | 167 mm | 83% | 1.4 m/s | 6.2 |
| 2024 | 33.2°C | 27.1°C | 21.1°C | 39.5°C | 16.7°C | 56 mm | 69% | 1.5 m/s | 6.9 |
| 2023 | 32.5°C | 26.3°C | 20.0°C | 40.3°C | 16.1°C | 74 mm | 68% | 1.3 m/s | 6.6 |
| 2022 | 30.9°C | 25.3°C | 19.7°C | 36.2°C | 14.4°C | 131 mm | 75% | 1.3 m/s | 6.9 |
| 2021 | 29.1°C | 24.7°C | 20.3°C | 33.4°C | 13.9°C | 88 mm | 82% | 1.4 m/s | 6.3 |
| 2020 | 29.5°C | 24.5°C | 19.4°C | 32.5°C | 13.5°C | 41 mm | 80% | 1.6 m/s | 6.8 |
| 2019 | 28.1°C | 23.8°C | 19.4°C | 31.3°C | 13.0°C | 207 mm | 83% | 1.5 m/s | 6.3 |
| 2018 | 32.6°C | 27.0°C | 21.5°C | 36.4°C | 16.5°C | 81 mm | 71% | 1.6 m/s | 6.9 |
| 2017 | 30.1°C | 24.6°C | 19.1°C | 33.6°C | 14.1°C | 139 mm | 75% | 1.6 m/s | 6.3 |
| 2016 | 31.9°C | 26.6°C | 21.2°C | 36.2°C | 15.2°C | 47 mm | 74% | 1.3 m/s | 7 |
| 2015 | 29.3°C | 25.1°C | 20.8°C | 31.8°C | 15.9°C | 131 mm | 83% | 1.5 m/s | 6.8 |
| 2014 | 29.5°C | 24.8°C | 20.2°C | 34.8°C | 13.8°C | 117 mm | 80% | 1.8 m/s | 5.8 |
| 2013 | 30.1°C | 24.6°C | 19.0°C | 37.6°C | 11.3°C | 68 mm | 76% | 1.7 m/s | 6.9 |
| 2012 | 34.8°C | 27.5°C | 20.2°C | 41.8°C | 11.4°C | 53 mm | 57% | 1.7 m/s | 7.2 |
| 2011 | 33.2°C | 27.2°C | 21.3°C | 37.3°C | 17.9°C | 30 mm | 71% | 1.6 m/s | 7.2 |
| 2010 🔥 | 33.5°C | 28.0°C | 22.4°C | 38.4°C | 19.5°C | 113 mm | 71% | 1.5 m/s | 6.7 |
| 2009 | 31.3°C | 25.9°C | 20.5°C | 38.0°C | 12.3°C | 79 mm | 75% | 1.5 m/s | 6.8 |
| 2008 | 29.3°C | 24.5°C | 19.7°C | 30.8°C | 11.8°C | 175 mm | 81% | 1.8 m/s | 6.2 |
| 2007 | 28.6°C | 24.4°C | 20.1°C | 31.2°C | 16.1°C | 167 mm | 81% | 1.6 m/s | 5.4 |
| 2006 | 32.5°C | 25.8°C | 19.1°C | 36.1°C | 15.8°C | 84 mm | 62% | 1.5 m/s | 6.9 |
| 2005 | 32.5°C | 26.2°C | 20.0°C | 38.5°C | 16.3°C | 87 mm | 66% | 1.3 m/s | 6.9 |
| 2004 | 29.0°C | 24.3°C | 19.5°C | 32.7°C | 13.8°C | 191 mm | 79% | 1.4 m/s | 5.3 |
| 2003 | 28.8°C | 23.3°C | 17.8°C | 33.9°C | 12.7°C | 128 mm | 75% | 1.6 m/s | 6.1 |
| 2002 | 29.9°C | 24.5°C | 19.0°C | 33.9°C | 15.7°C | 88 mm | 76% | 1.4 m/s | 6.8 |
| 2001 | 31.1°C | 24.9°C | 18.7°C | 34.5°C | 10.6°C | 78 mm | 69% | 1.5 m/s | 7 |
| 2000 🌧️ | 27.8°C | 23.1°C | 18.4°C | 32.2°C | 9.9°C | 270 mm | 82% | 1.6 m/s | 5 |
| 1999 | 28.0°C | 23.7°C | 19.4°C | 31.6°C | 13.4°C | 196 mm | 83% | 1.5 m/s | 5.6 |
| 1998 | 33.3°C | 26.9°C | 20.5°C | 37.8°C | 10.8°C | 84 mm | 67% | 2 m/s | 6.7 |
| 1997 | 30.4°C | 24.4°C | 18.5°C | 33.8°C | 11.9°C | 152 mm | 74% | 1.4 m/s | 6.5 |
| 1996 | 32.1°C | 25.8°C | 19.4°C | 36.8°C | 12.2°C | 98 mm | 68% | 1.3 m/s | 6.9 |
| 1995 | 27.9°C | 23.0°C | 18.0°C | 30.4°C | 12.1°C | 150 mm | 80% | 1.4 m/s | 6.2 |
| 1994 | 32.2°C | 26.7°C | 21.1°C | 39.3°C | 18.0°C | 77 mm | 73% | 1.3 m/s | 6.7 |
| 1993 | 28.1°C | 23.7°C | 19.4°C | 32.0°C | 9.7°C | 128 mm | 86% | 1.5 m/s | 5.7 |
| 1992 | 27.2°C | 22.7°C | 18.1°C | 30.8°C | 12.6°C | 185 mm | 83% | 1.4 m/s | 5.3 |
| 1991 | 31.0°C | 25.8°C | 20.6°C | 35.8°C | 16.2°C | 75 mm | 75% | 1.3 m/s | 6.4 |
| 1990 | 30.0°C | 25.0°C | 20.0°C | 33.4°C | 12.6°C | 45 mm | 81% | 1.6 m/s | 6.9 |
| 1989 | 26.9°C | 22.4°C | 17.8°C | 30.9°C | 11.2°C | 171 mm | 83% | 1.4 m/s | 5.9 |
| 1988 | 33.9°C | 26.5°C | 19.1°C | 39.4°C | 11.4°C | 36 mm | 55% | 1.3 m/s | 6.9 |
| 1987 | 29.6°C | 24.5°C | 19.3°C | 34.2°C | 12.1°C | 83 mm | 75% | 1.3 m/s | 6.6 |
| 1986 | 28.9°C | 24.5°C | 20.1°C | 32.2°C | 15.7°C | 122 mm | 82% | 1.2 m/s | 6.3 |
| 1985 | 28.7°C | 23.1°C | 17.5°C | 32.7°C | 10.3°C | 99 mm | 77% | 1.6 m/s | 6.4 |
| 1984 | 32.5°C | 26.3°C | 20.0°C | 38.3°C | 11.0°C | 43 mm | 66% | 1.6 m/s | 6.2 |
| 1983 | 28.5°C | 22.8°C | 17.2°C | 33.0°C | 9.5°C | 88 mm | 76% | 1.6 m/s | — |
| 1982 ❄️ | 27.1°C | 21.9°C | 16.8°C | 31.9°C | 9.6°C | 155 mm | 79% | 1.4 m/s | — |
| 1981 | 29.7°C | 24.9°C | 20.1°C | 33.8°C | 11.8°C | 127 mm | 80% | 1.7 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 30.3°C with lows near 19.6°C (mean 25°C), based on 45 years of NASA POWER data.
June averages 111 mm of rainfall in Fort Smith, about average for rainfall. The wettest on record was 270 mm in 2000.
The hottest June reached 41.8°C in 2012. The coldest dipped to 9.5°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 2°C. Daytime highs moved from 29.3°C to 31.1°C and overnight lows from 18.3°C to 20.4°C over the same span.
June is one of the warmer months of the year in Fort Smith and about average for rainfall, so plan for around 30.3°C daytime highs and 19.6°C at night.
Not quite — June is the 10th coolest month in Fort Smith, averaging 25°C.
For June in Fort Smith, pack light, breathable clothing and sun protection, with typical highs of 30.3°C and lows of 19.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 75% — quite humid.
Average wind speed in June is 1.5 m/s. The windiest June on record averaged 2 m/s (1998).
The wettest June on record was 2000 with 270 mm. On average, June sees 111 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Fort Smith behaves each June, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for June specifically, along with year-by-year records and how the month has changed over the decades.
