Climate · Tyrone

Tyrone, ND climate

Tyrone has cold, snowy winters and pleasant summers, with very little rain. A typical July afternoon reaches 83°, a January night drops to 2°, and about 48 inches of snow falls in a normal winter.

NOAA 1991-2020 climate normals Updated once a decade
July high
83°
170th hottest of 1,711 North Dakota towns
January low
2°
450th mildest of 1,711 North Dakota towns
Rain + melted snow
15 in
17th driest of 1,711 North Dakota towns
Snow a winter
48 in
376th snowiest of 1,453 North Dakota towns
A normal year

What a year in Tyrone feels like

Winter

24° / 5°
Typical high / low · 14 days with an inch or more of snow

Spring

54° / 29°
Typical high / low · Last frost around May 21

Summer

81° / 53°
Typical high / low · 21 days reach 90° in a normal year

Fall

55° / 30°
Typical high / low · First frost around Sep 21
Best months to be outsideMayJunJulAugSepHighs of 62–84° and lows of 40° or more
Month by month

Tyrone weather by month

Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.

MonthHighLowRain + meltSnowWet daysSnow on ground30-yr range
January21°2°0.5" 11.2"828 0° – 27°
February26°5°0.4" 6.7"721 -5° – 30°
March40°17°0.5" 6.4"715 14° – 41°
April56°29°1.1" 3.7"82 34° – 48°
May67°40°2.2" 0.9"100 49° – 60°
June76°50°2.8" 0120 58° – 69°
July83°55°2.5" 090 61° – 76°
August83°53°1.6" 090 63° – 74°
September72°43°1.4" 080 52° – 64°
October56°30°0.9" 2.6"72 33° – 48°
November38°18°0.5" 6.3"710 15° – 38°
December25°7°0.5" 10.4"920 5° – 26°
Year54°29°14.8"48.2"10097

“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.

Rain & snow

Rain and snow in Tyrone

Tyrone gets 15 inches of rain and melted snow a year. June is the wettest month and February the driest. Rain or snow falls on about 100 days a year. Snow covers the ground about 97 days of the year.

15 in
Rain + melted snow a year
Less rain than 94% of U.S. towns
48 in
Snow in a normal winter
More snow than 80% of U.S. towns
97 days
With 1"+ of snow on the ground
More than 90% of U.S. towns

Rain + melted snow by month

Inches of water
2.8"

Snowfall by month

Inches of snow
11"
Frost & the growing season

About 123 frost-free days a year

In half of years the last 32° night comes by May 21 and the first one by September 21. That leaves about 123 frost-free days for gardens, shorter than 97% of U.S. towns.

191
nights at or below 32° in a normal year
42
nights below 0° in a normal year
21
days that reach 90° in a normal year

Freezing nights by month

Average nights at or below 32°

90° days by month

Average days at 90° or more
Heating & cooling

Heating and cooling a home in Tyrone

Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Tyrone, 95% of that work is heating and 5% is cooling, so the furnace matters far more than the air conditioner.

95%heating
8,906 heating degree daysMore heating than 94% of U.S. towns
457 cooling degree daysLess cooling than 80% of U.S. towns

Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.

Around Tyrone

Tyrone and its neighbors

Tyrone borders 4 towns with climate data. January nights across them vary by 1.3°. Athens has both the coldest January nights (1°) and the hottest July afternoons (83°). Tyrone’s January low is 2° and its July high 83°.

Pherrin: January low 2°, July high 84°Marshall: January low 2°, July high 82°Dublin: January low 1°, July high 83°Williston: January low 2°, July high 84°Mont: January low 2°, July high 83°Williston: January low 2°, July high 84°Winner: January low 1°, July high 82°Orthell: January low 1°, July high 83°Bonetraill: January low 1°, July high 82°East Fork: January low 1°, July high 83°Missouri Ridge: January low 2°, July high 83°Athens: January low 1°, July high 83°Blacktail: January low 1°, July high 83°Tyrone: January low 2°, July high 83° TyroneEast ForkMissouri RidgeAthensBlacktail
ColderMilder1° to 2°
Athens0.9° −0.6°
Blacktail1.1° −0.4°
East Fork1.2° −0.3°
Tyrone1.5°
Missouri Ridge2.2° +0.7°

Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.

Compared with other towns

How Tyrone compares

Summer heat83° July high
Cooler than 63% of U.S. towns170th hottest of 1,711 North Dakota towns
Winter cold2° January low
Colder than 95% of U.S. towns450th mildest of 1,711 North Dakota towns
Precipitation15" a year
Drier than 94% of U.S. towns17th driest of 1,711 North Dakota towns
Snow48" a winter
Snowier than 80% of U.S. towns376th snowiest of 1,453 North Dakota towns
Growing season123 frost-free days
Shorter than 97% of U.S. towns117th shortest of 1,688 North Dakota towns

Compared with every U.S. town and city on TownTapestry, each counted once.

Then and now

Warmer than it used to be

+1.8°1991–2020 average vs. the 20th century (1901–2000)

The last 30 years in Tyrone averaged 1.8° warmer than the 1900s. The biggest change is in January (+4.7°). The shift is larger than in 89% of U.S. towns.

❄️ Winter+3.6° now 14°, was 11°
🌷 Spring+1.5° now 41°, was 40°
☀️ Summer+1.1° now 67°, was 66°
🍂 Fall+1.0° now 43°, was 42°

Change by month1991–2020 average minus 1901–2000 average, at Tyrone’s spot on NOAA’s grid

Year to year

How much a month can swing

A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from -5° to 30°. May is the most reliable, staying within 11°.

Coldest to warmest month in 30 yearsNormal
Questions

Common questions about Tyrone’s climate

What is the coldest month in Tyrone?

January, with a typical high of 21° and a low of 2°.

What is the hottest month in Tyrone?

July, with a typical high of 83° and a low of 55°. About 21 days a year reach 90°.

How much snow does Tyrone get?

About 48 inches in a normal winter, most of it in January.

When is the first frost in Tyrone?

In half of years the first 32° night comes by September 21, and the last spring frost by May 21.

What is the rainiest month in Tyrone?

June, with 2.8 inches of rain and melted snow. The year totals 15 inches.

Temperatures and rainfall come from NOAA’s gridded climate normals for Tyrone itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Williston Sloulin Intl Airport, ND (11 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.

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