Nampa, ID All-Time Weather Extremes
The most extreme temperature, precipitation, and snowfall ever recorded in Nampa, from NOAA daily weather observations.
| Temperature | ||
|---|---|---|
| Record High | 111°F (44°C) | July 16, 1925 |
| Record Low | -27°F (-33°C) | December 25, 1924 and January 21, 1930 and January 23, 1962 |
| Lowest High | -5°F (-21°C) | December 26, 1924 |
| Highest Low | 78°F (26°C) | July 17, 1976 |
| Highest Mean | 93°F (34°C) | July 14, 2002 |
| Lowest Mean | -15°F (-26°C) | December 26, 1924 |
| Precipitation | ||
| Max in One Calendar Day | 2.47" (62.7 mm) | September 14, 1959 |
| Max in One Month | 5.45" (138.5 mm) | January 1970 |
| Least in One Month | 0.00" (0.0 mm) | July 1909 |
| Max in One Year | 20.21" (513.4 mm) | 1983 |
| Least in One Year | 6.28" (159.6 mm) | 1935 |
| Snowfall | ||
| Max in One Calendar Day | 19.0" (48.3 cm) | February 2, 1916 |
| Max in One Month | 34.0" (86.3 cm) | February 1916 |
| Max in One Season | 55.5" (141.0 cm) | 1915-16 |
| Max in One Year | 60.7" (154.1 cm) | 1916 |
| Earliest Snow | 2.0" (5.1 cm) | October 28, 1919 |
| Earliest Measurable Snow | 2.0" (5.1 cm) | October 28, 1919 |
| Latest Snow | 2.3" (5.8 cm) | May 10, 2022 |
| Latest Measurable Snow | 2.3" (5.8 cm) | May 10, 2022 |
| Period of Record | ||
| Temperature | October 1, 1906 – July 31, 2026 | |
| Precipitation | October 1, 1906 – July 31, 2026 | |
| Snowfall | November 1, 1906 – July 31, 2026 | |
Note: Records compiled from NOAA GHCN-Daily observations at EMMETT 2 E (20 mi from Nampa, ID). Quality-flagged readings are excluded. Monthly and annual totals require substantially complete reporting for “least” records.
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Frequently Asked Questions
What is the hottest temperature ever recorded in Nampa, ID?
The all-time record high in Nampa, ID is 111°F (44°C), set on July 16, 1925.
What is the coldest temperature ever recorded in Nampa, ID?
The all-time record low in Nampa, ID is -27°F (-33°C), set on December 25, 1924 and January 21, 1930 and January 23, 1962.
What is the most rain Nampa, ID has ever had in one day?
The most precipitation recorded in one calendar day near Nampa, ID is 2.47 inches, on September 14, 1959.
What is the biggest snowfall ever recorded in Nampa, ID?
The most snow recorded in one calendar day near Nampa, ID is 19.0 inches, on February 2, 1916.
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