July is one of the warmer months of the year in Twin Falls, with average highs near 33.2°C and lows around 16.2°C (mean 24.7°C). It is one of the drier months, averaging 12 mm of rainfall and 31% relative humidity across the period.
July is one of the warmer months of the year in Twin Falls. Across 45 years of records, the warmest July in Twin Falls was 2021 — when the month averaged 28.7°C — while the coldest was 1993 at 17.5°C. Typical July days reach 33.2°C with nights near 16.2°C. The long-term trend is warming, about 0.9°C per decade.
July is one of the drier months in Twin Falls, averaging 12 mm of rainfall. The wettest July on record was 1984 with 32 mm, while the driest was 2018 at 1 mm.
Relative humidity in Twin Falls during July averages 31%. The most humid July was 1982 at 47%, and the least humid were 2000 and 2003 at 22%.
July receives about 7.5 kWh/m²/day of solar energy in Twin Falls. The sunniest July was 2016 at 8.2 kWh/m²/day, and the cloudiest was 2021 at 6.7.
Average wind speed in Twin Falls during July is 2.4 m/s. The windiest July was 1993 at 3.1 m/s, while the calmest was 1998 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.5°C | 23.2°C | 25.8°C | 25.1°C | 26.7°C | +3.2°C |
| Avg High | 32.0°C | 31.6°C | 34.4°C | 33.5°C | 35.2°C | +3.2°C |
| Avg Low | 15.0°C | 14.7°C | 17.2°C | 16.7°C | 18.2°C | +3.2°C |
| Avg Rain | 18 mm | 11 mm | 11 mm | 10 mm | 9 mm | -9 mm |
July temperatures in Twin Falls have risen by about 3.9°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 4.9°C (1986) to a record high of 42.7°C (2002).
Rainfall in July is one of the drier months, averaging 12 mm, with a wettest year of 32 mm.
One of the best times to visit Twin Falls
July is one of the best times to visit Twin Falls. Expect days averaging 33.2°C and nights around 16.2°C (mean 24.7°C) — warmer than Twin Falls's yearly average — with low rainfall (12 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 | 34.8°C | 26.3°C | 17.8°C | 40.0°C | 12.3°C | 10 mm | 25% | 2.6 m/s | 7.6 |
| 2024 | 35.3°C | 27.0°C | 18.8°C | 41.2°C | 11.6°C | 8 mm | 26% | 2.4 m/s | 7.4 |
| 2023 | 35.2°C | 26.7°C | 18.2°C | 40.3°C | 11.3°C | 6 mm | 29% | 2.2 m/s | 7.7 |
| 2022 | 36.4°C | 27.7°C | 18.9°C | 40.1°C | 14.4°C | 3 mm | 24% | 2.1 m/s | 7.9 |
| 2021 🔥 | 36.9°C | 28.7°C | 20.5°C | 40.8°C | 16.3°C | 20 mm | 25% | 2.1 m/s | 6.7 |
| 2020 | 32.8°C | 23.9°C | 15.1°C | 40.9°C | 9.0°C | 8 mm | 32% | 2.6 m/s | 8.1 |
| 2019 | 33.0°C | 24.8°C | 16.7°C | 39.5°C | 9.4°C | 4 mm | 34% | 2.3 m/s | 7.1 |
| 2018 | 35.1°C | 26.4°C | 17.7°C | 38.3°C | 9.0°C | 1 mm | 26% | 2.4 m/s | 7.8 |
| 2017 | 35.3°C | 26.9°C | 18.5°C | 38.8°C | 12.5°C | 6 mm | 32% | 2.1 m/s | 7.5 |
| 2016 | 32.8°C | 24.1°C | 15.4°C | 39.0°C | 7.3°C | 6 mm | 28% | 2.6 m/s | 8.2 |
| 2015 | 30.4°C | 23.0°C | 15.6°C | 38.1°C | 8.2°C | 23 mm | 39% | 2.2 m/s | 6.9 |
| 2014 | 34.5°C | 26.3°C | 18.0°C | 41.6°C | 10.8°C | 6 mm | 29% | 2.6 m/s | 7.6 |
| 2013 | 35.6°C | 27.0°C | 18.4°C | 40.8°C | 14.7°C | 12 mm | 25% | 2.3 m/s | 7.2 |
| 2012 | 34.6°C | 26.2°C | 17.7°C | 39.9°C | 11.5°C | 22 mm | 31% | 2.3 m/s | 6.9 |
| 2011 | 32.3°C | 23.5°C | 14.6°C | 37.7°C | 9.2°C | 7 mm | 37% | 2.4 m/s | 8 |
| 2010 | 31.7°C | 23.0°C | 14.2°C | 37.9°C | 8.1°C | 12 mm | 34% | 2.7 m/s | 7.9 |
| 2009 | 31.7°C | 23.7°C | 15.6°C | 37.9°C | 9.2°C | 10 mm | 39% | 2.1 m/s | 7.9 |
| 2008 | 34.1°C | 25.0°C | 16.0°C | 39.4°C | 10.9°C | 9 mm | 25% | 2.5 m/s | 8 |
| 2007 | 36.6°C | 28.0°C | 19.5°C | 40.9°C | 14.4°C | 13 mm | 24% | 2.2 m/s | 7.1 |
| 2006 | 35.4°C | 27.0°C | 18.6°C | 41.0°C | 13.0°C | 15 mm | 32% | 2.1 m/s | 7.4 |
| 2005 | 33.6°C | 24.8°C | 16.1°C | 39.9°C | 10.0°C | 6 mm | 33% | 2.4 m/s | 7.8 |
| 2004 | 33.0°C | 24.8°C | 16.6°C | 39.9°C | 10.4°C | 19 mm | 32% | 2.2 m/s | 7.4 |
| 2003 | 36.5°C | 27.7°C | 18.9°C | 42.2°C | 12.8°C | 5 mm | 22% | 2.3 m/s | 8 |
| 2002 | 35.5°C | 26.7°C | 17.9°C | 42.7°C | 12.2°C | 6 mm | 24% | 2.6 m/s | 7.5 |
| 2001 | 32.6°C | 24.3°C | 16.0°C | 40.9°C | 10.3°C | 20 mm | 31% | 2.4 m/s | 7.1 |
| 2000 | 34.5°C | 25.7°C | 16.8°C | 41.5°C | 9.3°C | 5 mm | 22% | 2.3 m/s | 7.8 |
| 1999 | 32.7°C | 23.7°C | 14.6°C | 38.8°C | 7.6°C | 3 mm | 25% | 2.6 m/s | 8 |
| 1998 | 33.7°C | 25.4°C | 17.1°C | 41.3°C | 14.0°C | 14 mm | 39% | 2 m/s | 8 |
| 1997 | 30.1°C | 22.0°C | 13.9°C | 36.7°C | 6.9°C | 21 mm | 40% | 2.3 m/s | 7.3 |
| 1996 | 33.3°C | 24.7°C | 16.2°C | 38.1°C | 9.6°C | 11 mm | 31% | 2.4 m/s | 7.7 |
| 1995 | 30.4°C | 22.1°C | 13.8°C | 37.7°C | 8.3°C | 12 mm | 42% | 2.6 m/s | 7.5 |
| 1994 | 33.7°C | 25.0°C | 16.3°C | 39.5°C | 8.3°C | 10 mm | 24% | 2.6 m/s | 7.7 |
| 1993 ❄️ | 25.6°C | 17.5°C | 9.5°C | 35.9°C | 6.7°C | 21 mm | 42% | 3.1 m/s | 7.7 |
| 1992 | 30.3°C | 21.9°C | 13.5°C | 37.3°C | 6.7°C | 4 mm | 30% | 2.8 m/s | 7.7 |
| 1991 | 33.6°C | 25.0°C | 16.3°C | 38.6°C | 9.1°C | 9 mm | 29% | 2.2 m/s | 7.2 |
| 1990 | 32.9°C | 24.4°C | 15.9°C | 39.1°C | 8.8°C | 3 mm | 29% | 2.5 m/s | 7.6 |
| 1989 | 35.0°C | 25.9°C | 16.9°C | 39.9°C | 10.7°C | 12 mm | 25% | 2.3 m/s | 7.3 |
| 1988 | 34.1°C | 25.4°C | 16.6°C | 38.7°C | 8.5°C | 2 mm | 22% | 2.7 m/s | 7.6 |
| 1987 | 29.8°C | 21.7°C | 13.5°C | 38.0°C | 7.5°C | 28 mm | 35% | 2.6 m/s | 6.9 |
| 1986 | 29.8°C | 21.5°C | 13.2°C | 38.0°C | 4.9°C | 11 mm | 33% | 2.7 m/s | 7.2 |
| 1985 | 34.8°C | 26.4°C | 18.1°C | 40.2°C | 11.9°C | 24 mm | 28% | 2.1 m/s | 7 |
| 1984 🌧️ | 31.6°C | 23.5°C | 15.3°C | 37.1°C | 8.2°C | 32 mm | 41% | 2.1 m/s | 7.3 |
| 1983 | 30.1°C | 21.4°C | 12.7°C | 37.3°C | 5.0°C | 17 mm | 37% | 2.7 m/s | — |
| 1982 | 29.3°C | 21.6°C | 13.8°C | 36.6°C | 7.8°C | 29 mm | 47% | 2.2 m/s | — |
| 1981 | 33.1°C | 24.0°C | 14.9°C | 40.0°C | 7.2°C | 3 mm | 22% | 2.6 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 33.2°C with lows near 16.2°C (mean 24.7°C), based on 45 years of NASA POWER data.
July averages 12 mm of rainfall in Twin Falls, one of the drier months. The wettest on record was 32 mm in 1984.
The hottest July reached 42.7°C in 2002. The coldest dipped to 4.9°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 3.9°C. Daytime highs moved from 31.8°C to 35.7°C and overnight lows from 15°C to 18.8°C over the same span.
July is one of the warmer months of the year in Twin Falls and one of the drier months, so plan for around 33.2°C daytime highs and 16.2°C at night.
Not quite — July is the 12th coolest month in Twin Falls, averaging 24.7°C.
For July in Twin Falls, pack light, breathable clothing and sun protection, with typical highs of 33.2°C and lows of 16.2°C.
Relative humidity in July averages 31% — relatively dry.
Average wind speed in July is 2.4 m/s. The windiest July on record averaged 3.1 m/s (1993).
The wettest July on record was 1984 with 32 mm. On average, July sees 12 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 Twin Falls behaves each July, 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 July specifically, along with year-by-year records and how the month has changed over the decades.
