April is one of the cooler months of the year in Post Falls, with average highs near 11.8°C and lows around 0.5°C (mean 6.2°C). It is about average for rainfall, averaging 59 mm of rainfall and 74% relative humidity across the period.
April is one of the cooler months of the year in Post Falls. Across 45 years of records, the warmest April in Post Falls was 2016 — when the month averaged 10.2°C — while the coldest was 2008 at 2.7°C. Typical April days reach 11.8°C with nights near 0.5°C. The long-term April temperature trend is broadly flat.
April is about average for rainfall in Post Falls, averaging 59 mm of rainfall. The wettest April on record was 1996 with 110 mm, while the driest was 2021 at 18 mm.
Relative humidity in Post Falls during April averages 74%. The most humid April was 1993 at 81%, and the least humid was 2021 at 66%.
April receives about 4.7 kWh/m²/day of solar energy in Post Falls. The sunniest April was 2021 at 5.6 kWh/m²/day, and the cloudiest were 2001, 2011 and 2017 at 4.
Average wind speed in Post Falls during April is 1.2 m/s. The windiest Aprils were 2013, 2018 and 2022, among others at 1.3 m/s, while the calmest were 1999, 2004 and 2016, among others at 1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 6.2°C | 6.3°C | 6.1°C | 6.2°C | 5.9°C | -0.3°C |
| Avg High | 12.1°C | 11.9°C | 11.7°C | 11.6°C | 11.8°C | -0.3°C |
| Avg Low | 0.5°C | 0.7°C | 0.4°C | 0.8°C | 0.0°C | -0.5°C |
| Avg Rain | 54 mm | 67 mm | 52 mm | 72 mm | 41 mm | -13 mm |
April temperatures in Post Falls have risen by about 0.4°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -6.5°C (2008) to a record high of 28.5°C (1987).
Rainfall in April is about average for rainfall, averaging 59 mm, with a wettest year of 110 mm.
A good time to visit Post Falls
April is a good time to visit Post Falls, with days averaging 11.8°C and nights around 0.5°C (mean 6.2°C, cooler than Post Falls's yearly average) and moderate rainfall. August and July are marginally more temperate, but April still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 13.5°C | 6.9°C | 0.4°C | 19.5°C | -3.7°C | 36 mm | 73% | 1.1 m/s | 5.4 |
| 2024 | 12.1°C | 6.5°C | 0.9°C | 21.9°C | -3.0°C | 38 mm | 74% | 1.1 m/s | 4.7 |
| 2023 | 11.2°C | 5.6°C | -0.1°C | 26.3°C | -4.4°C | 59 mm | 75% | 1.1 m/s | 4.5 |
| 2022 | 8.4°C | 3.4°C | -1.5°C | 16.4°C | -5.9°C | 62 mm | 74% | 1.3 m/s | 4.3 |
| 2021 | 13.4°C | 6.7°C | 0.0°C | 21.9°C | -3.7°C | 18 mm | 66% | 1.2 m/s | 5.6 |
| 2020 | 12.0°C | 6.1°C | 0.1°C | 19.5°C | -5.5°C | 33 mm | 71% | 1.1 m/s | 5.1 |
| 2019 | 11.8°C | 6.6°C | 1.3°C | 19.0°C | -3.8°C | 69 mm | 76% | 1.1 m/s | 4.3 |
| 2018 | 11.5°C | 6.3°C | 1.1°C | 27.8°C | -3.6°C | 81 mm | 77% | 1.3 m/s | 4.3 |
| 2017 | 10.5°C | 5.6°C | 0.7°C | 16.7°C | -3.3°C | 71 mm | 79% | 1.2 m/s | 4 |
| 2016 🔥 | 16.6°C | 10.2°C | 3.8°C | 25.7°C | -0.1°C | 38 mm | 70% | 1 m/s | 5.2 |
| 2015 | 12.5°C | 6.4°C | 0.2°C | 22.1°C | -4.0°C | 30 mm | 69% | 1.1 m/s | 5.4 |
| 2014 | 11.6°C | 5.7°C | -0.3°C | 20.7°C | -3.9°C | 73 mm | 75% | 1.2 m/s | 4.9 |
| 2013 | 10.8°C | 5.5°C | 0.2°C | 19.3°C | -5.0°C | 76 mm | 74% | 1.3 m/s | 4.5 |
| 2012 | 12.8°C | 7.3°C | 1.8°C | 25.8°C | -3.7°C | 91 mm | 77% | 1.2 m/s | 4.3 |
| 2011 | 7.4°C | 2.9°C | -1.6°C | 15.2°C | -4.3°C | 105 mm | 80% | 1.2 m/s | 4 |
| 2010 | 11.0°C | 5.8°C | 0.5°C | 22.0°C | -5.2°C | 88 mm | 76% | 1.3 m/s | 4.3 |
| 2009 | 11.0°C | 5.2°C | -0.6°C | 21.2°C | -5.0°C | 50 mm | 74% | 1.1 m/s | 4.7 |
| 2008 ❄️ | 7.8°C | 2.7°C | -2.3°C | 18.4°C | -6.5°C | 47 mm | 77% | 1.1 m/s | 4.4 |
| 2007 | 11.8°C | 6.2°C | 0.6°C | 19.2°C | -4.2°C | 27 mm | 74% | 1.1 m/s | 4.7 |
| 2006 | 12.2°C | 6.7°C | 1.1°C | 21.5°C | -3.0°C | 65 mm | 76% | 1.1 m/s | 4.4 |
| 2005 | 13.2°C | 7.0°C | 0.8°C | 21.9°C | -4.0°C | 37 mm | 69% | 1.2 m/s | 4.7 |
| 2004 | 14.7°C | 8.3°C | 1.8°C | 22.5°C | -1.9°C | 40 mm | 69% | 1 m/s | 5.3 |
| 2003 | 11.2°C | 5.9°C | 0.6°C | 21.6°C | -4.2°C | 53 mm | 77% | 1.1 m/s | 4.3 |
| 2002 | 11.4°C | 5.8°C | 0.2°C | 17.2°C | -5.5°C | 55 mm | 73% | 1.2 m/s | 4.7 |
| 2001 | 10.4°C | 5.2°C | 0.0°C | 23.8°C | -5.3°C | 81 mm | 75% | 1.2 m/s | 4 |
| 2000 | 13.6°C | 7.5°C | 1.5°C | 22.7°C | -3.2°C | 63 mm | 74% | 1.1 m/s | 5 |
| 1999 | 11.4°C | 5.2°C | -1.0°C | 20.5°C | -4.9°C | 31 mm | 72% | 1 m/s | 4.8 |
| 1998 | 12.9°C | 7.3°C | 1.7°C | 23.9°C | -2.9°C | 43 mm | 70% | 1 m/s | 5 |
| 1997 | 9.7°C | 4.5°C | -0.8°C | 19.0°C | -5.5°C | 90 mm | 77% | 1.1 m/s | 4.7 |
| 1996 🌧️ | 11.7°C | 6.4°C | 1.2°C | 23.4°C | -3.6°C | 110 mm | 76% | 1.2 m/s | 4.3 |
| 1995 | 10.8°C | 5.2°C | -0.3°C | 17.1°C | -4.6°C | 48 mm | 73% | 1.1 m/s | 4.8 |
| 1994 | 13.6°C | 7.8°C | 1.9°C | 24.1°C | -2.4°C | 52 mm | 74% | 1.1 m/s | 4.3 |
| 1993 | 10.2°C | 5.4°C | 0.6°C | 15.6°C | -3.5°C | 101 mm | 81% | 1.1 m/s | 4.1 |
| 1992 | 13.2°C | 7.7°C | 2.2°C | 21.1°C | -4.1°C | 58 mm | 74% | 1.2 m/s | 4.3 |
| 1991 | 11.0°C | 5.4°C | -0.2°C | 20.8°C | -4.1°C | 77 mm | 76% | 1.2 m/s | 4.9 |
| 1990 | 14.0°C | 8.0°C | 2.0°C | 19.8°C | -3.0°C | 60 mm | 74% | 1.1 m/s | 4.8 |
| 1989 | 13.3°C | 7.1°C | 0.9°C | 21.1°C | -4.1°C | 42 mm | 74% | 1.2 m/s | 5 |
| 1988 | 13.9°C | 7.8°C | 1.7°C | 25.5°C | -4.9°C | 66 mm | 73% | 1.2 m/s | 4.3 |
| 1987 | 15.3°C | 8.9°C | 2.6°C | 28.5°C | -4.4°C | 47 mm | 71% | 1.2 m/s | 5.1 |
| 1986 | 11.3°C | 5.6°C | -0.2°C | 20.4°C | -5.1°C | 50 mm | 74% | 1.1 m/s | 4.8 |
| 1985 | 12.6°C | 6.7°C | 0.8°C | 22.0°C | -4.3°C | 32 mm | 74% | 1.3 m/s | 5 |
| 1984 | 10.2°C | 4.7°C | -0.8°C | 21.2°C | -4.9°C | 62 mm | 77% | 1.2 m/s | 4.4 |
| 1983 | 11.9°C | 6.1°C | 0.3°C | 18.3°C | -3.7°C | 32 mm | 70% | 1 m/s | — |
| 1982 | 9.1°C | 3.6°C | -1.8°C | 19.2°C | -4.8°C | 84 mm | 74% | 1.2 m/s | — |
| 1981 | 10.9°C | 5.7°C | 0.6°C | 21.7°C | -4.6°C | 73 mm | 76% | 1.3 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 11.8°C with lows near 0.5°C (mean 6.2°C), based on 45 years of NASA POWER data.
April averages 59 mm of rainfall in Post Falls, about average for rainfall. The wettest on record was 110 mm in 1996.
The hottest April reached 28.5°C in 1987. The coldest dipped to -6.5°C in 2008.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 0.4°C. Daytime highs moved from 10.9°C to 11.7°C and overnight lows from -0.2°C to -0.1°C over the same span.
April is one of the cooler months of the year in Post Falls and about average for rainfall, so plan for around 11.8°C daytime highs and 0.5°C at night.
Not quite — April is the 6th coolest month in Post Falls, averaging 6.2°C.
For April in Post Falls, pack warm layers and a jacket for chilly mornings, with typical highs of 11.8°C and lows of 0.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 74% — moderately humid.
Average wind speed in April is 1.2 m/s. The windiest April on record averaged 1.3 m/s (1981).
The wettest April on record was 1996 with 110 mm. On average, April sees 59 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 Post Falls behaves each April, 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 April specifically, along with year-by-year records and how the month has changed over the decades.
