April is close to Norman's year-round average, with average highs near 22.6°C and lows around 9.2°C (mean 15.9°C). It is a relatively wet time of year, averaging 94 mm of rainfall and 67% relative humidity across the period.
April is close to Norman's year-round average. Across 45 years of records, the warmest April in Norman was 2006 — when the month averaged 20.3°C — while the coldest was 1983 at 12.7°C. Typical April days reach 22.6°C with nights near 9.2°C. The long-term trend is warming, about 0.3°C per decade.
April is a relatively wet time of year in Norman, averaging 94 mm of rainfall. The wettest April on record was 2025 with 319 mm, while the driest was 1989 at 8 mm.
Relative humidity in Norman during April averages 67%. The most humid April was 1985 at 77%, and the least humid was 2011 at 49%.
April receives about 5.5 kWh/m²/day of solar energy in Norman. The sunniest Aprils were 1989, 2005 and 2006, among others at 6.1 kWh/m²/day, and the cloudiest was 2002 at 4.8.
Average wind speed in Norman during April is 3.9 m/s. The windiest Aprils were 2009 and 2011 at 4.5 m/s, while the calmest was 1987 at 2.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.5°C | 15.0°C | 16.5°C | 16.5°C | 16.2°C | +0.7°C |
| Avg High | 22.3°C | 21.8°C | 23.2°C | 23.1°C | 22.6°C | +0.3°C |
| Avg Low | 8.7°C | 8.2°C | 9.8°C | 9.9°C | 9.8°C | +1.1°C |
| Avg Rain | 62 mm | 109 mm | 78 mm | 105 mm | 126 mm | +63 mm |
April temperatures in Norman have risen by about 1.2°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -4.5°C (1997) to a record high of 37.1°C (2006).
Rainfall in April is a relatively wet time of year, averaging 94 mm, with a wettest year of 319 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 Norman
April is a good time to visit Norman, with days averaging 22.6°C and nights around 9.2°C (mean 15.9°C, close to Norman's yearly average) and higher rainfall. September and May 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 🌧️ | 23.3°C | 17.4°C | 11.5°C | 30.9°C | 0.5°C | 319 mm | 72% | 3.7 m/s | 5 |
| 2024 | 23.9°C | 17.8°C | 11.7°C | 30.8°C | 5.2°C | 104 mm | 66% | 4 m/s | 5.7 |
| 2023 | 21.9°C | 15.2°C | 8.6°C | 30.6°C | 2.8°C | 68 mm | 64% | 3.6 m/s | 5.9 |
| 2022 | 24.1°C | 17.1°C | 10.2°C | 33.4°C | 2.3°C | 79 mm | 61% | 4.4 m/s | 5.8 |
| 2021 | 21.4°C | 14.8°C | 8.2°C | 27.9°C | -0.3°C | 117 mm | 66% | 3.9 m/s | 5.2 |
| 2020 | 21.2°C | 14.7°C | 8.3°C | 30.4°C | -0.9°C | 66 mm | 73% | 3.6 m/s | 5.4 |
| 2019 | 22.2°C | 16.1°C | 10.0°C | 28.6°C | 1.5°C | 146 mm | 75% | 3.8 m/s | 5.4 |
| 2018 | 20.4°C | 13.0°C | 5.5°C | 29.6°C | -3.5°C | 54 mm | 61% | 4.1 m/s | 5.9 |
| 2017 | 23.2°C | 17.1°C | 10.9°C | 29.1°C | 4.3°C | 145 mm | 73% | 3.8 m/s | 5.1 |
| 2016 | 22.8°C | 16.6°C | 10.4°C | 27.9°C | 0.8°C | 185 mm | 72% | 3.3 m/s | 5.7 |
| 2015 | 22.8°C | 17.0°C | 11.3°C | 29.7°C | 3.5°C | 108 mm | 72% | 3.7 m/s | 5.1 |
| 2014 | 24.0°C | 16.5°C | 9.1°C | 31.3°C | -0.8°C | 47 mm | 56% | 4.1 m/s | 6 |
| 2013 | 20.5°C | 13.7°C | 7.0°C | 29.8°C | -2.5°C | 152 mm | 71% | 3.9 m/s | 5.2 |
| 2012 | 24.9°C | 18.8°C | 12.8°C | 31.7°C | 5.6°C | 89 mm | 74% | 3.6 m/s | 5.3 |
| 2011 | 27.1°C | 19.2°C | 11.4°C | 36.3°C | 3.3°C | 51 mm | 49% | 4.5 m/s | 5.8 |
| 2010 | 22.7°C | 16.5°C | 10.3°C | 28.7°C | 1.9°C | 74 mm | 70% | 4.3 m/s | 5.7 |
| 2009 | 23.2°C | 16.2°C | 9.2°C | 33.4°C | -3.4°C | 141 mm | 60% | 4.5 m/s | 5.2 |
| 2008 | 21.6°C | 14.7°C | 7.8°C | 29.3°C | 0.6°C | 108 mm | 70% | 4.2 m/s | 6 |
| 2007 | 19.8°C | 13.7°C | 7.5°C | 26.8°C | -1.1°C | 57 mm | 72% | 3.5 m/s | 5 |
| 2006 🔥 | 27.9°C | 20.3°C | 12.6°C | 37.1°C | 4.0°C | 82 mm | 52% | 4.1 m/s | 6.1 |
| 2005 | 22.9°C | 16.2°C | 9.4°C | 29.0°C | 3.1°C | 10 mm | 63% | 4.1 m/s | 6.1 |
| 2004 | 23.5°C | 16.9°C | 10.3°C | 30.2°C | 1.3°C | 65 mm | 67% | 3.6 m/s | 5.4 |
| 2003 | 24.3°C | 17.0°C | 9.7°C | 31.7°C | -1.5°C | 46 mm | 61% | 4.3 m/s | 6 |
| 2002 | 22.6°C | 16.8°C | 11.1°C | 29.1°C | 0.3°C | 128 mm | 75% | 3.8 m/s | 4.8 |
| 2001 | 23.5°C | 17.5°C | 11.5°C | 27.7°C | 1.8°C | 39 mm | 74% | 4.2 m/s | 5.4 |
| 2000 | 22.5°C | 15.6°C | 8.8°C | 31.3°C | 0.7°C | 102 mm | 65% | 3.7 m/s | 5.4 |
| 1999 | 22.9°C | 16.3°C | 9.6°C | 30.5°C | 0.8°C | 146 mm | 67% | 4 m/s | 5.6 |
| 1998 | 20.2°C | 13.6°C | 7.0°C | 27.7°C | 1.0°C | 88 mm | 70% | 3.6 m/s | 5.9 |
| 1997 | 19.4°C | 13.0°C | 6.5°C | 28.6°C | -4.5°C | 147 mm | 73% | 3.8 m/s | 5 |
| 1996 | 23.0°C | 15.0°C | 6.9°C | 30.7°C | -0.5°C | 58 mm | 51% | 4.3 m/s | 5.9 |
| 1995 | 22.0°C | 15.0°C | 8.1°C | 30.0°C | 0.9°C | 110 mm | 70% | 3.8 m/s | 5.2 |
| 1994 | 23.3°C | 15.9°C | 8.4°C | 30.4°C | -2.4°C | 101 mm | 66% | 4 m/s | 5.4 |
| 1993 | 19.9°C | 13.4°C | 7.0°C | 26.7°C | -0.2°C | 90 mm | 75% | 3.8 m/s | 5 |
| 1992 | 21.9°C | 15.8°C | 9.7°C | 27.9°C | -0.1°C | 83 mm | 76% | 3.1 m/s | 5.4 |
| 1991 | 24.6°C | 17.6°C | 10.6°C | 30.4°C | 4.0°C | 69 mm | 65% | 3.6 m/s | 5.3 |
| 1990 | 20.3°C | 14.2°C | 8.1°C | 26.6°C | -0.7°C | 194 mm | 77% | 3.7 m/s | 5 |
| 1989 | 23.7°C | 16.7°C | 9.7°C | 31.6°C | -2.1°C | 8 mm | 62% | 3.7 m/s | 6.1 |
| 1988 | 21.2°C | 14.1°C | 7.0°C | 27.8°C | 1.0°C | 74 mm | 70% | 3.5 m/s | 5.8 |
| 1987 | 22.0°C | 14.8°C | 7.6°C | 30.2°C | -3.4°C | 21 mm | 69% | 2.9 m/s | 6.1 |
| 1986 | 23.4°C | 17.2°C | 10.9°C | 30.0°C | 3.5°C | 98 mm | 68% | 3.9 m/s | 5.5 |
| 1985 | 22.3°C | 16.3°C | 10.2°C | 26.3°C | 2.7°C | 137 mm | 77% | 3.3 m/s | 6 |
| 1984 | 21.0°C | 13.9°C | 6.8°C | 30.1°C | 0.0°C | 47 mm | 65% | 4 m/s | 5.4 |
| 1983 ❄️ | 19.4°C | 12.7°C | 6.0°C | 28.9°C | -1.8°C | 60 mm | 69% | 4.1 m/s | — |
| 1982 | 20.9°C | 14.1°C | 7.3°C | 32.2°C | -1.5°C | 57 mm | 66% | 3.9 m/s | — |
| 1981 | 26.4°C | 19.7°C | 12.9°C | 31.0°C | 4.3°C | 58 mm | 62% | 4 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 22.6°C with lows near 9.2°C (mean 15.9°C), based on 45 years of NASA POWER data.
April averages 94 mm of rainfall in Norman, a relatively wet time of year. The wettest on record was 319 mm in 2025.
The hottest April reached 37.1°C in 2006. The coldest dipped to -4.5°C in 1997.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 1.2°C. Daytime highs moved from 22°C to 22.9°C and overnight lows from 8.6°C to 10°C over the same span.
April is close to Norman's year-round average and a relatively wet time of year, so plan for around 22.6°C daytime highs and 9.2°C at night.
Not quite — April is the 6th coolest month in Norman, averaging 15.9°C.
For April in Norman, pack light layers you can adjust through the day, with typical highs of 22.6°C and lows of 9.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 67% — moderately humid.
Average wind speed in April is 3.9 m/s. The windiest April on record averaged 4.5 m/s (2009).
The wettest April on record was 2025 with 319 mm. On average, April sees 94 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 Norman 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.
