May is one of the warmer months of the year in Longview, with average highs near 28.2°C and lows around 17.2°C (mean 22.7°C). It is a relatively wet time of year, averaging 132 mm of rainfall and 76% relative humidity across the period.
May is one of the warmer months of the year in Longview. Across 45 years of records, the warmest May in Longview was 1996 — when the month averaged 26.8°C — while the coldest was 1993 at 20.3°C. Typical May days reach 28.2°C with nights near 17.2°C. The long-term trend is warming, about 0.3°C per decade.
May is a relatively wet time of year in Longview, averaging 132 mm of rainfall. The wettest May on record was 2021 with 287 mm, while the driest was 1988 at 18 mm.
Relative humidity in Longview during May averages 76%. The most humid May was 2015 at 87%, and the least humid was 1998 at 61%.
May receives about 5.8 kWh/m²/day of solar energy in Longview. The sunniest May was 2018 at 6.6 kWh/m²/day, and the cloudiest was 2015 at 4.9.
Average wind speed in Longview during May is 2 m/s. The windiest Mays were 1996 and 2011 at 2.6 m/s, while the calmest were 1987, 1992 and 2023 at 1.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 22.2°C | 22.5°C | 23.0°C | 23.1°C | 23.0°C | +0.8°C |
| Avg High | 27.9°C | 27.9°C | 28.4°C | 28.7°C | 28.1°C | +0.2°C |
| Avg Low | 16.5°C | 17.1°C | 17.5°C | 17.4°C | 17.9°C | +1.4°C |
| Avg Rain | 131 mm | 128 mm | 114 mm | 128 mm | 173 mm | +42 mm |
May temperatures in Longview have risen by about 1.4°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 3.5°C (2013) to a record high of 40.6°C (1998).
Rainfall in May is a relatively wet time of year, averaging 132 mm, with a wettest year of 287 mm.
One of the best times to visit Longview
May is one of the best times to visit Longview. Expect days averaging 28.2°C and nights around 17.2°C (mean 22.7°C) — warmer than Longview's yearly average — with higher rainfall (132 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 | 27.6°C | 22.6°C | 17.7°C | 32.9°C | 10.7°C | 157 mm | 81% | 1.9 m/s | 5.5 |
| 2024 | 28.8°C | 24.4°C | 19.9°C | 34.8°C | 16.2°C | 258 mm | 84% | 1.8 m/s | 5 |
| 2023 | 27.9°C | 22.9°C | 17.8°C | 31.2°C | 9.2°C | 95 mm | 79% | 1.5 m/s | 5.8 |
| 2022 | 31.1°C | 24.8°C | 18.5°C | 36.3°C | 12.7°C | 105 mm | 72% | 2.1 m/s | 6.3 |
| 2021 🌧️ | 25.9°C | 21.4°C | 16.8°C | 29.9°C | 10.5°C | 287 mm | 86% | 2.1 m/s | 5.2 |
| 2020 | 27.2°C | 21.8°C | 16.5°C | 32.0°C | 10.3°C | 136 mm | 80% | 1.9 m/s | 6.2 |
| 2019 | 27.6°C | 23.0°C | 18.5°C | 31.0°C | 12.1°C | 275 mm | 84% | 1.9 m/s | 5.6 |
| 2018 | 31.6°C | 25.5°C | 19.3°C | 37.7°C | 13.8°C | 30 mm | 70% | 1.6 m/s | 6.6 |
| 2017 | 28.1°C | 21.9°C | 15.7°C | 31.7°C | 7.3°C | 147 mm | 72% | 2.2 m/s | 6 |
| 2016 | 26.1°C | 21.3°C | 16.5°C | 30.1°C | 8.5°C | 95 mm | 83% | 1.9 m/s | 5.4 |
| 2015 | 26.4°C | 22.5°C | 18.5°C | 29.8°C | 12.4°C | 278 mm | 87% | 2 m/s | 4.9 |
| 2014 | 27.2°C | 21.4°C | 15.6°C | 31.1°C | 6.1°C | 174 mm | 75% | 2 m/s | 6 |
| 2013 | 28.9°C | 22.4°C | 16.0°C | 35.0°C | 3.5°C | 84 mm | 69% | 2.3 m/s | 5.9 |
| 2012 | 30.1°C | 24.2°C | 18.3°C | 35.2°C | 14.5°C | 80 mm | 72% | 1.8 m/s | 6.5 |
| 2011 | 29.9°C | 23.2°C | 16.4°C | 37.4°C | 7.8°C | 74 mm | 66% | 2.6 m/s | 6.4 |
| 2010 | 31.5°C | 25.1°C | 18.7°C | 36.7°C | 11.4°C | 44 mm | 67% | 1.9 m/s | 6.4 |
| 2009 | 27.4°C | 22.2°C | 17.0°C | 32.4°C | 8.5°C | 138 mm | 80% | 1.8 m/s | 5.6 |
| 2008 | 27.5°C | 22.2°C | 16.8°C | 32.5°C | 7.9°C | 152 mm | 78% | 2 m/s | 5.8 |
| 2007 | 26.4°C | 22.2°C | 17.9°C | 29.2°C | 12.4°C | 180 mm | 83% | 1.7 m/s | 5.3 |
| 2006 | 29.8°C | 23.5°C | 17.2°C | 35.1°C | 10.4°C | 54 mm | 69% | 2 m/s | 6.3 |
| 2005 | 29.7°C | 23.1°C | 16.6°C | 37.9°C | 6.7°C | 45 mm | 66% | 1.6 m/s | 6.2 |
| 2004 | 28.1°C | 23.0°C | 17.9°C | 33.7°C | 7.7°C | 94 mm | 79% | 2.3 m/s | 5.8 |
| 2003 | 30.5°C | 24.7°C | 19.0°C | 37.4°C | 15.3°C | 62 mm | 72% | 2 m/s | 5.4 |
| 2002 | 28.6°C | 22.8°C | 16.9°C | 32.7°C | 7.7°C | 96 mm | 74% | 2.1 m/s | 6 |
| 2001 | 27.8°C | 22.6°C | 17.5°C | 31.4°C | 10.1°C | 153 mm | 79% | 1.8 m/s | 6.3 |
| 2000 | 28.6°C | 23.3°C | 18.1°C | 33.3°C | 9.5°C | 170 mm | 79% | 2.2 m/s | 5.8 |
| 1999 | 26.8°C | 21.7°C | 16.5°C | 29.6°C | 9.6°C | 215 mm | 81% | 1.8 m/s | 5.8 |
| 1998 | 33.7°C | 26.3°C | 18.8°C | 40.6°C | 11.6°C | 19 mm | 61% | 2 m/s | 6.5 |
| 1997 | 26.1°C | 20.9°C | 15.6°C | 31.1°C | 8.2°C | 86 mm | 81% | 1.9 m/s | 5.6 |
| 1996 🔥 | 33.7°C | 26.8°C | 19.8°C | 38.7°C | 9.4°C | 56 mm | 63% | 2.6 m/s | 5.7 |
| 1995 | 26.8°C | 21.8°C | 16.9°C | 31.4°C | 8.1°C | 128 mm | 83% | 2.1 m/s | 5.2 |
| 1994 | 26.6°C | 21.6°C | 16.6°C | 31.1°C | 6.9°C | 171 mm | 81% | 1.6 m/s | 5.5 |
| 1993 ❄️ | 25.4°C | 20.3°C | 15.2°C | 28.9°C | 8.5°C | 89 mm | 82% | 2 m/s | 5.3 |
| 1992 | 25.5°C | 20.8°C | 16.1°C | 29.4°C | 6.6°C | 105 mm | 81% | 1.5 m/s | 5.2 |
| 1991 | 27.3°C | 23.1°C | 18.9°C | 32.1°C | 7.7°C | 175 mm | 86% | 1.7 m/s | 5.1 |
| 1990 | 26.9°C | 21.8°C | 16.7°C | 30.3°C | 8.7°C | 235 mm | 83% | 2.3 m/s | 5.3 |
| 1989 | 27.7°C | 22.8°C | 17.8°C | 32.3°C | 10.1°C | 226 mm | 81% | 2.2 m/s | 5.7 |
| 1988 | 29.4°C | 22.3°C | 15.2°C | 34.9°C | 9.8°C | 18 mm | 62% | 1.9 m/s | 6.3 |
| 1987 | 29.3°C | 24.1°C | 18.9°C | 33.5°C | 14.3°C | 102 mm | 75% | 1.5 m/s | 5.5 |
| 1986 | 26.7°C | 21.6°C | 16.5°C | 30.8°C | 9.8°C | 172 mm | 79% | 1.9 m/s | 5.5 |
| 1985 | 27.5°C | 22.0°C | 16.5°C | 34.3°C | 10.0°C | 80 mm | 76% | 1.8 m/s | 6.1 |
| 1984 | 30.0°C | 23.1°C | 16.2°C | 35.1°C | 9.3°C | 73 mm | 66% | 2.3 m/s | 5.7 |
| 1983 | 26.2°C | 20.4°C | 14.5°C | 29.7°C | 8.5°C | 166 mm | 79% | 2 m/s | — |
| 1982 | 27.9°C | 22.7°C | 17.5°C | 33.2°C | 9.3°C | 122 mm | 78% | 1.9 m/s | — |
| 1981 | 26.7°C | 20.9°C | 15.1°C | 31.9°C | 6.6°C | 222 mm | 76% | 2.1 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 28.2°C with lows near 17.2°C (mean 22.7°C), based on 45 years of NASA POWER data.
May averages 132 mm of rainfall in Longview, a relatively wet time of year. The wettest on record was 287 mm in 2021.
The hottest May reached 40.6°C in 1998. The coldest dipped to 3.5°C in 2013.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.4°C. Daytime highs moved from 27.7°C to 28.3°C and overnight lows from 16°C to 18.1°C over the same span.
May is one of the warmer months of the year in Longview and a relatively wet time of year, so plan for around 28.2°C daytime highs and 17.2°C at night.
Not quite — May is the 8th coolest month in Longview, averaging 22.7°C.
For May in Longview, pack light layers you can adjust through the day, with typical highs of 28.2°C and lows of 17.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 76% — quite humid.
Average wind speed in May is 2 m/s. The windiest May on record averaged 2.6 m/s (1996).
The wettest May on record was 2021 with 287 mm. On average, May sees 132 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 Longview 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.
