May is one of the warmer months of the year in Wasilla, with average highs near 9.1°C and lows around 1°C (mean 5.1°C). It is one of the drier months, averaging 56 mm of rainfall and 73% relative humidity across the period.
May is one of the warmer months of the year in Wasilla. Across 45 years of records, the warmest May in Wasilla was 2014 — when the month averaged 7.8°C — while the coldest were 1982 and 1992 at 2.8°C. Typical May days reach 9.1°C with nights near 1°C. The long-term trend is warming, about 0.3°C per decade.
May is one of the drier months in Wasilla, averaging 56 mm of rainfall. The wettest May on record was 1998 with 95 mm, while the driest was 2015 at 25 mm.
Relative humidity in Wasilla during May averages 73%. The most humid May was 2024 at 78%, and the least humid was 2010 at 66%.
May receives about 4.9 kWh/m²/day of solar energy in Wasilla. The sunniest Mays were 1984 and 2002 at 5.6 kWh/m²/day, and the cloudiest was 1989 at 4.1.
Average wind speed in Wasilla during May is 0.9 m/s. The windiest May was 1998 at 1.3 m/s, while the calmest was 2004 at 0.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 4.3°C | 4.8°C | 5.1°C | 5.7°C | 5.3°C | +1°C |
| Avg High | 8.5°C | 8.9°C | 9.2°C | 9.7°C | 9.0°C | +0.5°C |
| Avg Low | 0.2°C | 0.7°C | 1.1°C | 1.7°C | 1.5°C | +1.3°C |
| Avg Rain | 57 mm | 61 mm | 56 mm | 49 mm | 61 mm | +4 mm |
May temperatures in Wasilla have risen by about 0.8°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -9.2°C (2012) to a record high of 21.1°C (2015).
Rainfall in May is one of the drier months, averaging 56 mm, with a wettest year of 95 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
A good time to visit Wasilla
May is a good time to visit Wasilla, with days averaging 9.1°C and nights around 1°C (mean 5.1°C, warmer than Wasilla's yearly average) and moderate rainfall. July and August are marginally more temperate, but May still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 8.3°C | 4.8°C | 1.3°C | 12.7°C | -1.6°C | 72 mm | 77% | 0.9 m/s | 5 |
| 2024 | 7.8°C | 4.4°C | 1.1°C | 13.1°C | -4.1°C | 81 mm | 78% | 0.9 m/s | 4.5 |
| 2023 | 7.8°C | 4.4°C | 0.9°C | 12.6°C | -3.3°C | 63 mm | 77% | 1.1 m/s | 4.3 |
| 2022 | 10.2°C | 6.1°C | 2.0°C | 17.2°C | -4.6°C | 29 mm | 69% | 0.7 m/s | 5.5 |
| 2021 | 9.2°C | 5.2°C | 1.2°C | 16.8°C | -4.7°C | 70 mm | 75% | 0.8 m/s | 4.9 |
| 2020 | 10.9°C | 6.7°C | 2.6°C | 15.8°C | -2.7°C | 50 mm | 73% | 0.7 m/s | 5 |
| 2019 | 9.3°C | 6.0°C | 2.7°C | 13.2°C | 0.3°C | 74 mm | 76% | 0.8 m/s | 4.4 |
| 2018 | 7.7°C | 4.3°C | 0.9°C | 11.9°C | -3.7°C | 71 mm | 76% | 1.1 m/s | 4.6 |
| 2017 | 9.1°C | 5.2°C | 1.2°C | 16.9°C | -2.9°C | 59 mm | 71% | 0.9 m/s | 4.9 |
| 2016 | 11.2°C | 7.4°C | 3.5°C | 17.7°C | -2.6°C | 38 mm | 71% | 0.8 m/s | 5.1 |
| 2015 | 11.1°C | 6.7°C | 2.3°C | 21.1°C | -1.9°C | 25 mm | 72% | 0.8 m/s | 5.3 |
| 2014 🔥 | 12.3°C | 7.8°C | 3.3°C | 16.5°C | 0.8°C | 32 mm | 67% | 1 m/s | 5.2 |
| 2013 | 8.6°C | 4.3°C | 0.0°C | 18.1°C | -6.2°C | 68 mm | 71% | 0.7 m/s | 5 |
| 2012 | 7.5°C | 3.8°C | 0.1°C | 13.3°C | -9.2°C | 59 mm | 71% | 1 m/s | 4.8 |
| 2011 | 9.4°C | 5.1°C | 0.9°C | 18.8°C | -3.9°C | 29 mm | 69% | 0.9 m/s | 5.4 |
| 2010 | 10.9°C | 6.3°C | 1.8°C | 18.1°C | -2.1°C | 36 mm | 66% | 0.9 m/s | 5.3 |
| 2009 | 10.7°C | 6.3°C | 2.0°C | 17.7°C | -0.7°C | 42 mm | 69% | 0.7 m/s | 5.1 |
| 2008 | 8.6°C | 4.3°C | 0.0°C | 12.6°C | -3.8°C | 37 mm | 69% | 1 m/s | 4.9 |
| 2007 | 8.8°C | 4.8°C | 0.9°C | 12.2°C | -2.4°C | 63 mm | 75% | 0.8 m/s | 4.6 |
| 2006 | 9.5°C | 5.4°C | 1.4°C | 18.5°C | -4.4°C | 39 mm | 72% | 0.9 m/s | 5 |
| 2005 | 10.4°C | 6.4°C | 2.4°C | 14.6°C | -1.2°C | 72 mm | 74% | 0.7 m/s | 4.8 |
| 2004 | 10.6°C | 7.1°C | 3.6°C | 15.9°C | -0.3°C | 62 mm | 76% | 0.6 m/s | 4.7 |
| 2003 | 8.6°C | 4.7°C | 0.8°C | 14.1°C | -2.7°C | 91 mm | 73% | 0.8 m/s | 4.7 |
| 2002 | 9.8°C | 5.5°C | 1.2°C | 16.9°C | -6.1°C | 46 mm | 73% | 0.7 m/s | 5.6 |
| 2001 | 6.9°C | 3.0°C | -0.8°C | 12.5°C | -6.0°C | 71 mm | 76% | 0.8 m/s | 4.8 |
| 2000 | 8.2°C | 4.0°C | -0.1°C | 11.6°C | -4.2°C | 32 mm | 71% | 0.7 m/s | 5.4 |
| 1999 | 8.3°C | 3.7°C | -0.8°C | 15.0°C | -7.4°C | 52 mm | 70% | 0.9 m/s | 5.1 |
| 1998 🌧️ | 7.6°C | 3.9°C | 0.3°C | 14.4°C | -4.2°C | 95 mm | 74% | 1.3 m/s | 4.6 |
| 1997 | 10.0°C | 5.7°C | 1.4°C | 16.0°C | -3.7°C | 79 mm | 68% | 0.8 m/s | 4.7 |
| 1996 | 10.5°C | 6.0°C | 1.5°C | 18.1°C | -1.9°C | 27 mm | 69% | 0.8 m/s | 5.1 |
| 1995 | 8.8°C | 5.0°C | 1.2°C | 14.2°C | -1.3°C | 64 mm | 73% | 1.1 m/s | 4.2 |
| 1994 | 8.2°C | 4.1°C | 0.1°C | 12.6°C | -3.9°C | 74 mm | 76% | 1.2 m/s | 5 |
| 1993 | 10.4°C | 6.4°C | 2.5°C | 19.1°C | -2.1°C | 53 mm | 75% | 0.9 m/s | 5.3 |
| 1992 | 7.3°C | 2.8°C | -1.6°C | 13.3°C | -8.8°C | 40 mm | 74% | 0.9 m/s | 5.2 |
| 1991 | 8.3°C | 4.4°C | 0.6°C | 15.0°C | -5.1°C | 67 mm | 73% | 1.2 m/s | 4.3 |
| 1990 | 9.7°C | 5.9°C | 2.1°C | 14.8°C | -1.9°C | 60 mm | 77% | 0.7 m/s | 4.6 |
| 1989 | 8.1°C | 4.3°C | 0.5°C | 12.5°C | -3.0°C | 76 mm | 76% | 0.9 m/s | 4.1 |
| 1988 | 8.9°C | 4.8°C | 0.8°C | 13.0°C | -5.1°C | 74 mm | 74% | 0.8 m/s | 5 |
| 1987 | 8.5°C | 4.6°C | 0.6°C | 14.6°C | -2.8°C | 76 mm | 76% | 0.9 m/s | 5.5 |
| 1986 | 8.4°C | 4.3°C | 0.2°C | 14.0°C | -3.1°C | 49 mm | 73% | 0.8 m/s | 5 |
| 1985 | 7.4°C | 3.1°C | -1.2°C | 14.8°C | -6.1°C | 62 mm | 72% | 1 m/s | 4.7 |
| 1984 | 8.5°C | 3.9°C | -0.7°C | 12.2°C | -5.2°C | 54 mm | 72% | 0.7 m/s | 5.6 |
| 1983 | 8.7°C | 4.8°C | 0.9°C | 14.5°C | -2.6°C | 51 mm | 73% | 0.8 m/s | — |
| 1982 ❄️ | 7.2°C | 2.8°C | -1.5°C | 13.9°C | -4.8°C | 35 mm | 74% | 0.8 m/s | — |
| 1981 | 10.5°C | 6.4°C | 2.3°C | 17.2°C | -2.5°C | 37 mm | 75% | 0.8 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 9.1°C with lows near 1°C (mean 5.1°C), based on 45 years of NASA POWER data.
May averages 56 mm of rainfall in Wasilla, one of the drier months. The wettest on record was 95 mm in 1998.
The hottest May reached 21.1°C in 2015. The coldest dipped to -9.2°C in 2012.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.8°C. Daytime highs moved from 8.5°C to 8.7°C and overnight lows from 0°C to 1.3°C over the same span.
May is one of the warmer months of the year in Wasilla and one of the drier months, so plan for around 9.1°C daytime highs and 1°C at night.
Not quite — May is the 8th coolest month in Wasilla, averaging 5.1°C.
For May in Wasilla, pack warm layers and a jacket for chilly mornings, with typical highs of 9.1°C and lows of 1°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 73% — moderately humid.
Average wind speed in May is 0.9 m/s. The windiest May on record averaged 1.3 m/s (1998).
The wettest May on record was 1998 with 95 mm. On average, May sees 56 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 Wasilla behaves each May, 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 May specifically, along with year-by-year records and how the month has changed over the decades.
