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 | 109.9°F (43°C) | July 23, 2003 |
| Record Low | -22°F (-30°C) | December 10, 1972 |
| Lowest High | -2°F (-19°C) | December 23, 1990 |
| Highest Low | 78°F (26°C) | July 17, 1976 |
| Highest Mean | 93°F (34°C) | July 14, 2002 |
| Lowest Mean | -10.4°F (-24°C) | December 23, 1990 |
| Precipitation | ||
| Max in One Calendar Day | 2.00" (50.8 mm) | September 11, 1976 |
| Max in One Month | 5.45" (138.5 mm) | January 1970 |
| Least in One Month | 0.00" (0.0 mm) | September 1974 |
| Max in One Year | 20.21" (513.4 mm) | 1983 |
| Least in One Year | 8.19" (208.0 mm) | 1974 |
| Snowfall | ||
| Max in One Calendar Day | 12.5" (31.8 cm) | January 2, 1982 and January 3, 1982 |
| Max in One Month | 109.1" (277.0 cm) | January 1982 |
| Max in One Season | 109.9" (279.1 cm) | 1981-82 |
| Max in One Year | 109.4" (277.8 cm) | 1982 |
| Earliest Snow | 0.5" (1.3 cm) | November 9, 2022 |
| Earliest Measurable Snow | 0.5" (1.3 cm) | November 9, 2022 |
| 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 | January 1, 1970 – July 31, 2026 | |
| Precipitation | January 1, 1970 – July 31, 2026 | |
| Snowfall | January 1, 1970 – 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 109.9°F (43°C), set on July 23, 2003.
What is the coldest temperature ever recorded in Nampa, ID?
The all-time record low in Nampa, ID is -22°F (-30°C), set on December 10, 1972.
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 2.00 inches, on September 11, 1976.
What is the biggest snowfall ever recorded in Nampa, ID?
The most snow recorded in one calendar day near Nampa, ID is 12.5 inches, on January 2, 1982 and January 3, 1982.
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