June is one of the warmer months of the year in Idaho Falls, with average highs near 23.6°C and lows around 8.4°C (mean 16°C). It is about average for rainfall, averaging 39 mm of rainfall and 50% relative humidity across the period.
June is one of the warmer months of the year in Idaho Falls. Across 45 years of records, the warmest June in Idaho Falls was 1988 — when the month averaged 20.5°C — while the coldest was 1998 at 12.1°C. Typical June days reach 23.6°C with nights near 8.4°C. The long-term trend is warming, about 0.3°C per decade.
June is about average for rainfall in Idaho Falls, averaging 39 mm of rainfall. The wettest June on record was 2009 with 119 mm, while the driest was 2021 at 6 mm.
Relative humidity in Idaho Falls during June averages 50%. The most humid June was 2009 at 65%, and the least humid was 1988 at 36%.
June receives about 7.3 kWh/m²/day of solar energy in Idaho Falls. The sunniest June was 2021 at 8.3 kWh/m²/day, and the cloudiest was 2009 at 5.9.
Average wind speed in Idaho Falls during June is 2.6 m/s. The windiest June was 1981 at 3.1 m/s, while the calmest was 2023 at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.1°C | 15.1°C | 16.2°C | 16.1°C | 16.9°C | +0.8°C |
| Avg High | 23.9°C | 22.6°C | 23.9°C | 23.7°C | 24.3°C | +0.4°C |
| Avg Low | 8.4°C | 7.7°C | 8.5°C | 8.6°C | 9.5°C | +1.1°C |
| Avg Rain | 32 mm | 45 mm | 42 mm | 34 mm | 42 mm | +10 mm |
June temperatures in Idaho Falls have risen by about 2.8°C between 1981–1985 and 2021–2025.
June has ranged from a record low of -2.6°C (1995) to a record high of 36.7°C (1988).
Rainfall in June is about average for rainfall, averaging 39 mm, with a wettest year of 119 mm.
One of the best times to visit Idaho Falls
June is one of the best times to visit Idaho Falls. Expect days averaging 23.6°C and nights around 8.4°C (mean 16°C) — warmer than Idaho Falls's yearly average — with moderate rainfall (39 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 | 25.9°C | 18.1°C | 10.3°C | 32.7°C | 2.9°C | 12 mm | 44% | 2.4 m/s | 8 |
| 2024 | 25.2°C | 17.6°C | 10.0°C | 31.7°C | -0.2°C | 21 mm | 50% | 2.7 m/s | 7.9 |
| 2023 | 21.3°C | 15.0°C | 8.7°C | 26.6°C | 2.7°C | 79 mm | 62% | 1.8 m/s | 6.3 |
| 2022 | 23.6°C | 15.9°C | 8.1°C | 32.5°C | -0.8°C | 41 mm | 50% | 2.8 m/s | 7.3 |
| 2021 | 28.8°C | 20.3°C | 11.8°C | 33.6°C | 1.1°C | 6 mm | 38% | 2.6 m/s | 8.3 |
| 2020 | 21.1°C | 14.5°C | 7.9°C | 30.1°C | -0.6°C | 93 mm | 60% | 2.8 m/s | 6.5 |
| 2019 | 22.2°C | 15.2°C | 8.3°C | 28.6°C | 0.9°C | 24 mm | 55% | 2.4 m/s | 7.3 |
| 2018 | 22.7°C | 15.6°C | 8.5°C | 28.2°C | 2.1°C | 53 mm | 56% | 2.6 m/s | 7.5 |
| 2017 | 22.9°C | 15.9°C | 8.8°C | 29.8°C | 3.0°C | 47 mm | 60% | 2.4 m/s | 7.3 |
| 2016 | 26.3°C | 18.4°C | 10.5°C | 33.4°C | 5.8°C | 16 mm | 48% | 2.6 m/s | 7.8 |
| 2015 | 27.1°C | 19.4°C | 11.6°C | 35.6°C | 6.8°C | 27 mm | 52% | 2.1 m/s | 7.8 |
| 2014 | 22.9°C | 15.2°C | 7.5°C | 28.6°C | 1.8°C | 34 mm | 50% | 2.8 m/s | 7.3 |
| 2013 | 25.8°C | 17.5°C | 9.2°C | 33.9°C | 2.5°C | 8 mm | 42% | 2.6 m/s | 8 |
| 2012 | 24.9°C | 16.5°C | 8.2°C | 32.6°C | 0.6°C | 9 mm | 42% | 3 m/s | 8.1 |
| 2011 | 20.8°C | 13.5°C | 6.1°C | 29.6°C | -2.6°C | 53 mm | 59% | 2.8 m/s | 6.9 |
| 2010 | 21.3°C | 14.1°C | 6.9°C | 32.4°C | 0.8°C | 68 mm | 60% | 2.5 m/s | 6.3 |
| 2009 🌧️ | 19.8°C | 13.7°C | 7.7°C | 30.2°C | 2.6°C | 119 mm | 65% | 2 m/s | 5.9 |
| 2008 | 22.7°C | 15.2°C | 7.7°C | 33.3°C | 0.7°C | 29 mm | 49% | 2.6 m/s | 7.2 |
| 2007 | 26.2°C | 17.8°C | 9.5°C | 33.4°C | 0.9°C | 27 mm | 41% | 2.7 m/s | 7.9 |
| 2006 | 25.3°C | 17.5°C | 9.7°C | 32.8°C | 4.2°C | 40 mm | 52% | 2.5 m/s | 7.9 |
| 2005 | 20.9°C | 13.8°C | 6.8°C | 31.2°C | -1.7°C | 70 mm | 58% | 2.7 m/s | 6.7 |
| 2004 | 23.7°C | 16.0°C | 8.4°C | 29.8°C | 3.4°C | 58 mm | 51% | 2.4 m/s | 7.4 |
| 2003 | 24.9°C | 16.9°C | 8.9°C | 32.0°C | 3.5°C | 14 mm | 41% | 2.6 m/s | 7.7 |
| 2002 | 25.0°C | 17.2°C | 9.3°C | 35.4°C | 0.1°C | 27 mm | 43% | 2.7 m/s | 7.2 |
| 2001 | 24.8°C | 16.8°C | 8.9°C | 34.3°C | 0.1°C | 23 mm | 37% | 2.9 m/s | 7.3 |
| 2000 | 25.6°C | 17.0°C | 8.4°C | 32.4°C | 1.4°C | 18 mm | 40% | 2.8 m/s | 7.9 |
| 1999 | 21.9°C | 14.7°C | 7.4°C | 29.9°C | -0.7°C | 54 mm | 54% | 2.7 m/s | 7.1 |
| 1998 ❄️ | 18.7°C | 12.1°C | 5.6°C | 30.0°C | 0.1°C | 72 mm | 61% | 2.3 m/s | 6.6 |
| 1997 | 23.1°C | 16.1°C | 9.0°C | 29.3°C | 3.5°C | 52 mm | 58% | 2.3 m/s | 7.5 |
| 1996 | 24.9°C | 16.8°C | 8.6°C | 30.1°C | 1.2°C | 13 mm | 47% | 2.6 m/s | 8.2 |
| 1995 | 19.9°C | 13.3°C | 6.7°C | 27.6°C | -2.6°C | 67 mm | 61% | 2.3 m/s | 6.7 |
| 1994 | 25.5°C | 17.3°C | 9.0°C | 33.0°C | 2.8°C | 14 mm | 38% | 2.8 m/s | 7.3 |
| 1993 | 20.2°C | 12.9°C | 5.6°C | 28.7°C | -0.1°C | 67 mm | 56% | 2.6 m/s | 6.7 |
| 1992 | 24.5°C | 16.8°C | 9.2°C | 32.6°C | 3.4°C | 59 mm | 47% | 2.3 m/s | 6.3 |
| 1991 | 22.7°C | 15.1°C | 7.4°C | 29.4°C | 1.8°C | 34 mm | 49% | 2.7 m/s | 7.4 |
| 1990 | 24.3°C | 16.1°C | 8.0°C | 35.0°C | 0.2°C | 22 mm | 43% | 2.9 m/s | 7.4 |
| 1989 | 23.4°C | 15.6°C | 7.9°C | 30.8°C | 1.5°C | 24 mm | 47% | 2.5 m/s | 7.1 |
| 1988 🔥 | 28.8°C | 20.5°C | 12.2°C | 36.7°C | 4.6°C | 11 mm | 36% | 2.9 m/s | 7.4 |
| 1987 | 25.1°C | 17.1°C | 9.1°C | 31.9°C | 0.7°C | 32 mm | 46% | 2.3 m/s | 7.7 |
| 1986 | 26.8°C | 18.9°C | 10.9°C | 31.9°C | 5.0°C | 15 mm | 47% | 2.4 m/s | 7.7 |
| 1985 | 24.8°C | 16.4°C | 8.0°C | 31.7°C | 1.1°C | 17 mm | 42% | 2.5 m/s | 7.5 |
| 1984 | 20.6°C | 13.3°C | 6.1°C | 31.5°C | -0.9°C | 70 mm | 57% | 2.5 m/s | 6.4 |
| 1983 | 20.4°C | 13.4°C | 6.4°C | 27.6°C | 1.3°C | 49 mm | 57% | 2.3 m/s | — |
| 1982 | 22.1°C | 14.8°C | 7.5°C | 30.4°C | 1.1°C | 43 mm | 55% | 2.1 m/s | — |
| 1981 | 22.8°C | 15.0°C | 7.3°C | 32.1°C | 0.3°C | 31 mm | 48% | 3.1 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 23.6°C with lows near 8.4°C (mean 16°C), based on 45 years of NASA POWER data.
June averages 39 mm of rainfall in Idaho Falls, about average for rainfall. The wettest on record was 119 mm in 2009.
The hottest June reached 36.7°C in 1988. The coldest dipped to -2.6°C in 1995.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 2.8°C. Daytime highs moved from 22.1°C to 25°C and overnight lows from 7.1°C to 9.8°C over the same span.
June is one of the warmer months of the year in Idaho Falls and about average for rainfall, so plan for around 23.6°C daytime highs and 8.4°C at night.
Not quite — June is the 10th coolest month in Idaho Falls, averaging 16°C.
For June in Idaho Falls, pack light layers you can adjust through the day, with typical highs of 23.6°C and lows of 8.4°C.
Relative humidity in June averages 50% — relatively dry.
Average wind speed in June is 2.6 m/s. The windiest June on record averaged 3.1 m/s (1981).
The wettest June on record was 2009 with 119 mm. On average, June sees 39 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 Idaho Falls 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.
