Weather & Climate in New Plymouth, ID

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

New Plymouth experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 30°F in January while summers reach 77°F in July. The area gets 302 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 10.2 inches (drier than the 38-inch national average). The area receives 8.3 inches of snow annually. Air quality is rated Good with a median AQI of 33. The city sits at an elevation of 2,258 feet.

Temperature

30°F Jan (-1°C) 77°F Jul (25°C)

Annual Average	51.8°F
	4% below US avg
January Average	30°F (-1°C)
July Average	77°F (25°C)
Sunny Days	302 days/yr

Geography

Elevation	2,258 ft (688 m)
Area	0.7 sq mi (1.8 km²)
Population Density	2,700/sq mi
Coordinates	43.9704°N, 116.8188°W
Timezone	America/Boise
County	Canyon County County
Nearest Airport	Boise Air Trml/Gowen Field (BOI) 41 miles away

Precipitation & Snow

Annual Rainfall 10.2"

73% below US avg

Snowfall 8.3"

Wettest Month (Jan) 1.69"

Driest Month (Jul) 0.31"

Air Quality

AQI Median	33.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	71.7 / 100
Social Vulnerability	18.5 / 100
Community Resilience	42.4 / 100

Hazard Breakdown

Tornado	Very Low
Earthquake	Relatively Low
Wildfire	Relatively Moderate
Flood	Relatively Moderate
Hail	Relatively Low
Strong Wind	Relatively Moderate
Heat Wave	Relatively Moderate
Winter Weather	Very High
Lightning	Relatively High
Ice Storm	Relatively Moderate
Drought	Very Low
Cold Wave	Relatively Low
Landslide	Very Low
Volcano	Very Low
Avalanche	Very Low

Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

1,185 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.5.

Mar 31, 2020	Stanley, Idaho	M6.5	146 km	12 km
Feb 26, 2024	10 km N of Smiths Ferry, Idaho	M4.9	73 km	12 km
Apr 1, 2020	21 km WNW of Stanley, Idaho	M4.8	138 km	10 km
Jun 25, 2020	27 km NW of Stanley, Idaho	M4.6	139 km	8 km
Apr 1, 2020	23 km NW of Stanley, Idaho	M4.4	138 km	7 km
May 21, 2020	26 km NW of Stanley, Idaho	M4.4	141 km	6 km
May 14, 2020	31 km NW of Stanley, Idaho	M4.4	137 km	13 km
Jun 14, 2020	10 km NW of Stanley, Idaho	M4.2	145 km	8 km
Jun 9, 2020	11 km NW of Stanley, Idaho	M4.2	147 km	10 km
Apr 11, 1995	20 km SSE of Yellow Pine, Idaho	M4.2	143 km	5 km
Jul 10, 2020	18 km SW of Stanley, Idaho	M4.1	139 km	10 km
Apr 11, 2020	20 km NW of Stanley, Idaho	M4.1	140 km	10 km
Apr 21, 2020	29 km NW of Stanley, Idaho	M4.1	139 km	10 km
Jun 3, 2025	15 km NNW of Stanley, Idaho	M4.0	150 km	14 km
Apr 3, 2020	20 km NW of Stanley, Idaho	M4.0	139 km	10 km
Jun 3, 2025	17 km NNW of Stanley, Idaho	M4.0	149 km	10 km
Apr 1, 2020	18 km NW of Stanley, Idaho	M4.0	141 km	14 km
Oct 27, 1994	11 km SE of Halfway, Oregon	M4.0	95 km	10 km
Jan 1, 2021	15 km SSW of Stanley, Idaho	M3.9	147 km	3 km
Jun 6, 2025	17 km NW of Stanley, Idaho	M3.9	144 km	13 km

Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

36 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1.

Date	Rating	Distance	Path	Fatalities
Apr 30, 1997	EF1	28 km	3.0 mi	0
May 17, 1996	EF1	29 km	0.3 mi	0
May 17, 1996	EF1	33 km	5.5 mi	0
Jun 19, 1991	EF1	28 km	0.1 mi	0
Jul 9, 1990	EF1	42 km	0.1 mi	0
Oct 26, 1984	EF1	57 km	0.3 mi	0
Mar 21, 1984	EF1	65 km	0.1 mi	0
Jul 1, 1983	EF1	6 km	2.0 mi	0
Apr 23, 1974	EF1	32 km	1.0 mi	0
Aug 25, 1966	EF1	31 km	19.1 mi	0
Jun 27, 1958	EF1	86 km	5.0 mi	0
Jul 9, 1956	EF1	40 km	0.1 mi	0
May 26, 2023	EF0	40 km	1.0 mi	0
May 27, 2022	EF0	62 km	3.8 mi	0
Aug 25, 2004	EF0	29 km	—	0
Aug 25, 2004	EF0	16 km	—	0
Apr 6, 2003	EF0	48 km	1.0 mi	0
Sep 29, 2002	EF0	21 km	1.0 mi	0
Feb 7, 2002	EF0	28 km	0.1 mi	0
Sep 13, 2001	EF0	33 km	1.0 mi	0

Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Nearby Volcanoes

2 volcanoes within 200 km. Closest: Jordan Craters (105 km).

Name	Type	Elevation	Last Eruption	Distance
Jordan Craters	Volcanic field	1,473 m (4,833 ft)	-1250	105 km
Diamond Craters	Volcanic field	1,435 m (4,708 ft)	-5610	183 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: SODA (282,888 acres, 2015).

Year	Name	Acres Burned	Distance
2015	SODA	282,888	73 km
2024	PADDOCK	186,842	31 km
2024	COW VALLEY	134,642	67 km
2020	WOODHEAD	98,995	86 km
2000	JACKSON	80,733	36 km
2006	CHERRY	56,773	37 km
2015	BENDIRE COMPLEX	49,260	91 km
2006	RATTLESNAKE COMPLEX	48,330	90 km
2013	OWYHEE	48,001	48 km
2020	INDIAN CREEK	46,275	87 km
2002	TRIMBLY CREEK	43,085	59 km
1986	BISSELL CK	40,847	16 km
1986	VAN DUSEN	39,901	31 km
2022	WILLOW CREEK	38,585	42 km
2016	CHERRY ROAD	35,219	56 km
2018	MESA	34,541	86 km
2002	MAHOGANY COMPLEX (ATKINS BUTTE)	33,472	75 km
1996	COW HOLLOW COMPLEX (COW HOLLOW)	31,276	42 km
2024	THOMPSON	31,066	82 km
1996	COYOTE BUTTE	30,626	75 km

Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	30°F (-1°C)	1.7 in	Wettest
February	35°F (2°C)	1.3 in
March	43°F (6°C)	1.3 in
April	50°F (10°C)	1.0 in
May	59°F (15°C)	1.0 in
June	67°F (19°C)	0.9 in
July	77°F (25°C)	0.3 in	Warmest, Driest
August	73°F (23°C)	0.4 in
September	63°F (17°C)	0.7 in
October	51°F (11°C)	0.8 in
November	39°F (4°C)	1.6 in
December	30°F (-1°C)	1.7 in	Coldest

New Plymouth has a seasonal temperature swing of 47°F / from 30°F in December to 77°F in July. Total annual precipitation is 12.5 inches, with January being the wettest month (1.7") and July the driest (0.3").

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