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Nampa, ID Weather on April 20
April 20th in Nampa, ID typically brings mild spring weather, with average highs around 65°F and lows near 38°F — a 27°F daily swing. Over 45 years of records, the warmest April 20th was in 1994 (65°F average), while the coldest was 1982 (37°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 29% of April 20th dates historically, with the wettest April 20th recording 2.34" of rain.
What to Expect on April 20
Planning for April 20th in Nampa, ID? Great weather for outdoor activities.
April 20 Weather Records for Nampa
- •The all-time record high for April 20th in Nampa, ID is 83°F, set in 2009.
- •The coldest April 20th on record dropped to 23°F in 1982.
- •A freeze (32°F or below) has occurred on April 20th in 11 of the last 45 years.
Frequently Asked Questions
What was the warmest April 20 ever in Nampa?
The warmest April 20 in Nampa, ID reached 83°F in 2009. That is 18°F above the long-term average high of 65°F.
What was the coldest April 20 ever in Nampa?
The coldest April 20 in Nampa, ID dropped to 23°F in 1982. That is 15°F below the long-term average low of 38°F.
What is the average temperature on April 20 in Nampa?
On April 20, Nampa averages a high of 65°F and a low of 38°F based on 45 years of NOAA weather observations from NAMPA SUGAR FACTORY.
How many years of weather data are available for April 20 in Nampa?
We have 45 years of weather records for April 20 in Nampa, ID, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2015.
April 20 Weather History in Nampa
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2015 | 73°F | 39°F | 0" | -- |
| 2014 | 79°F | 44°F | 0" | -- |
| 2013 | 59°F | 42°F | 0.51" | -- |
| 2012 | 65°F | 46°F | 0.1" | -- |
| 2011 | 55°F | 29°F | 0" | -- |
| 2010 | 82°F | 41°F | 0" | -- |
| 2009 | 83°F | 44°F | 0" | -- |
| 2008 | 47°F | 29°F | 0" | -- |
| 2007 | 56°F | 33°F | 0" | -- |
| 2006 | 63°F | 36°F | 0" | -- |
| 2005 | 62°F | 39°F | 0" | -- |
| 2004 | 59°F | 39°F | 0.05" | -- |
| 2003 | 63°F | 39°F | 0" | -- |
| 2002 | 62°F | 32°F | 0" | -- |
| 2001 | 60°F | 43°F | 0" | -- |
| 2000 | 72°F | 46°F | 0.13" | -- |
| 1999 | 70°F | 45°F | 0.1" | -- |
| 1998 | 67°F | 30°F | 0" | -- |
| 1997 | 70°F | 51°F | 0.3" | -- |
| 1996 | 58°F | 33°F | 0.25" | -- |
| 1995 | 60°F | 34°F | 0.46" | -- |
| 1994 | 82°F | 48°F | 0" | -- |
| 1993 | 59°F | 32°F | 0" | -- |
| 1992 | 68°F | 36°F | 0" | -- |
| 1991 | 65°F | 36°F | 0" | -- |
| 1990 | 79°F | 46°F | 0.03" | -- |
| 1989 | 82°F | 45°F | 0" | -- |
| 1988 | 68°F | 43°F | 0.69" | -- |
| 1987 | 57°F | 27°F | 0" | -- |
| 1986 | 67°F | 32°F | 0" | -- |
| 1985 | 56°F | 24°F | 0.66" | -- |
| 1984 | 57°F | 37°F | 0" | -- |
| 1983 | 69°F | 43°F | 0" | -- |
| 1982 | 51°F | 23°F | 0" | -- |
| 1981 | 73°F | 45°F | 2.34" | -- |
| 1980 | 80°F | 40°F | 0" | -- |
| 1979 | 55°F | 30°F | 0" | -- |
| 1978 | 71°F | 40°F | 0" | -- |
| 1977 | 58°F | 25°F | 0" | -- |
| 1976 | 67°F | 46°F | 0.05" | -- |
| 1975 | 61°F | 33°F | 0" | -- |
| 1974 | 65°F | 36°F | 0" | -- |
| 1973 | 58°F | 36°F | 0" | -- |
| 1972 | 67°F | 37°F | 0" | -- |
| 1971 | 67°F | 37°F | 0" | -- |
Based on 45 years of data from NOAA station: NAMPA SUGAR FACTORY
Monthly Climate Averages
Historical temperature and precipitation averages for Nampa, ID, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.