Climate and monthly weather forecastJamestown, ND
Climate and monthly weather forecast
The climate of Jamestown
Positioned in the North Dakota region, Jamestown is subject to the Humid continental climate, as per the Köppen climate classification, where it is labeled as Dfb. This climate is typically characterized by no dry season and a warm summer. Generally, the temperature ranges from 3.6°F (-15.8°C) to 81.3°F (27.4°C), peaking in July, while the lowest is noted in January. Rainfall is a frequent occurrence throughout the year, with the wettest period being from May to June, recording a maximum average monthly precipitation of 2.95" (75mm). Snowfall, on the other hand, is prevalent from November to March, with the heaviest, 4.69" (119mm), observed in December.Humidity plays a significant role in shaping Jamestown’s climate, reaching a high of 90% in January and a low of 59% in August. Similarly, atmospheric pressure experiences slight variations climbing to a high of 30.18" (767mm) in February and dropping to a minimum of 29.85" (758mm) in June. Sunshine measures are highest in July with 11 hours while the least, 3.7 hours, is recorded in December. This pattern closely aligns with the daylight hours that extend from 15.8 in June to the shortest duration of 8.6 hours in December.
In relation to wind movements, the maximum average is experienced in December, with winds blowing at approximately 11.2mph (18km/h). The wind speed is at its lowest in July and August at 8.5mph (13.7km/h). The months of November to January receive the highest wind gusts, moving at an average speed of 17.4mph (28km/h).
The best time to visit Jamestown
For those seeking to experience the best Jamestown has to offer, the period between May and August is highly recommended. During this time, the temperatures are mild, ranging from 64°F (17.8°C) to 81°F (27.2°C). There is ample sunshine and daylight, with relative humidity maintained at comfortable levels between 59% and 73%. While June exhibits the greatest monthly rainfall, the overall weather conditions during this period are ideal for outdoor explorations and other activities.The worst time to visit Jamestown
Tourists may find the period from November through February a challenging time to visit Jamestown due to the city’s experience of a harsh winter. Temperature during these months can go as low as 10.2°F (-12.1°C), with high snowfall observed, reaching a maximum of 4.69" (119mm) in December. Also, these months, on average, have the shortest daylight hours, ranging from 8.6 hours to 10.3 hours, and fairly limited sunshine, ranging from 3.7 hours to 3.9 hours.Spring weather in Jamestown
The Spring months from March to May in Jamestown are characterized by a steady increase in temperature, humidity, and rainfall. Temperatures in Spring range from 20.7°F (-6.3°C) to 64°F (17.8°C). This period, especially May, marks the commencement of the wetter part of the year, with precipitation values averaging between 1.5" (38mm) and 2.24" (57mm). The days become longer with increased daylight hours and sunshine.Summer weather in Jamestown
Jamestown's summer months, from June to August, bring about warm temperatures, abounding sunshine, and the highest rainfall levels of the year. Temperatures are at their zenith during this period, ranging from 59.2°F (15.1°C) to 81.3°F (27.4°C). Rainfall is at its peak in June with an average of 2.95" (75mm). These warm and often humid conditions are counterbalanced by the presence of longer daylight hours and adequate sunshine.Autumn weather in Jamestown
When Autumn rolls around from September to November, Jamestown experiences a gradual decline in temperatures and less rainfall compared to the summer months. The temperature oscillates between 24.4°F (-4.2°C) and 70.7°F (21.5°C). Rainfall, while decreasing, remains considerable averaging from 1.42" (36mm) to 1.85" (47mm) for the season.Winter weather in Jamestown
During the Winter months from December to February, Jamestown endures what can be a severe cold, with temperatures plummeting from 21.2°F (-6°C) to 3.6°F (-15.8°C). During this season, the area witnesses more snowfall, with the heaviest occurring in December reaching an average of 4.69" (119mm). Coupled with shortened daylight hours and limited sunshine, the winter in Jamestown can indeed be quite frigid and challenging.Weather in January
January in Jamestown, North Dakota, is marked by frozen landscapes, icy roads, and warming fires. Chilly weather grips the city with a high and low temperature range from 17.8°F (-7.9°C) to 3.6°F (-15.8°C). The city is coated with 3.35" (85mm) of snowfall for a significant part of the month. Weather in January »Weather in February
In February, the biting cold of January transitions into a slightly warmer climate, although still quite cold. There is a slight increase in snowfall to 3.78" (96mm), though a decrease in the snowfall days from 12.8 days in January. Weather in February »Weather in March
March brings an improvement in the temperature, helping the snow to begin melting. However, the increase in temperature also comes with a larger amount of rainfall, now at 0.91" (23mm), contrasting with the 0.55" (14mm) of rainfall in January. Weather in March »Weather in April
April sees a significant shift in weather as temperatures start to rise and conditions become less harsh. Snowfall dwindles to 1.77" (45mm), marking the end of the snowy season and paving the way for spring. People begin to gather at popular outdoor spots, appreciating the extended hours of daylight. Weather in April »Weather in May
Coming into May, North Dakota enjoys a perceptible shift in weather with a significant increase in temperature. The indications of summer are burgeoning alongside the 2.24" (57mm) of rainfall recorded in this month. The days are gradually longer, the nights shorter, and the city buzzes with outdoor activities. Weather in May »Weather in June
With June arrives a convincing summer in Jamestown, North Dakota. It is the first month without any snowfall after the long winter and marks the peak of rain showers with 2.95" (75mm) of recorded rainfall. Drastic changes have transformed the white, snowy landscapes into a picturesque array of green and blooming flowers. Weather in June »Weather in July
July in Jamestown is identified by locals as the heart of summer. The temperatures are at their highest, luring many to the city's various water bodies for a refreshing dip. The city is buzzing with summer festivities under the consistent sunshine, boasting of the highest UV index of the year at 6. Weather in July »Weather in August
August signifies the winding down of the summer heat in Jamestown. The weather continues to be pleasant but is gradually moving from warmer temperatures. Despite this, the temperatures remain similar to July ranging from 81°F (27.2°C) to 59.2°F (15.1°C). Weather in August »Weather in September
The September weather in Jamestown brings a noticeable change, heralding the arrival of Autumn. Significantly cooler than August, some of the summer heat dissipates during this month. Residents often admire the turning leaves and crisp air, an indication of the coming winter. Weather in September »Weather in October
October ushers in a more robust Fall climate. The city spends more time under the cover of cloudiness than in the previous months. Slightly more rainfall makes the weather damp, but the occasional sunshine keeps the atmosphere lively. Weather in October »Weather in November
November in Jamestown is deemed the preliminary month for winter, with a significant drop in temperatures. The city experiences the first notable snowfall of the year with 2.52" (64mm), indicating the approach of winter. Parks and sidewalks decorated with fallen leaves gradually get a frosting of snowflakes. Weather in November »Weather in December
December is the inception of winter in Jamestown, with a notable increase in snowfall to 4.69" (119mm). Though it is the end of the year, the city enters a whole new season of winter festivities and snowball fights. Christmas brightens up the city with cheering lights and merry decorations. Weather in December »Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January, with an average high of 17.8°F (-7.9°C) and a low of 3.6°F (-15.8°C), signifies the coldest month of the year.
The most humid month is January, with an average relative humidity of 90%.
January is the month with the least rainfall in Jamestown, North Dakota. Rain falls for 2.7 days and accumulates 0.55" (14mm) of precipitation.
Throughout the year, in Jamestown, North Dakota, there are 96.6 rainfall days, and 16.77" (426mm) of precipitation is accumulated.
January through May, October through December are months with snowfall.
Throughout the year, in Jamestown, North Dakota, there are 63 snowfall days, and 20.91" (531mm) of snow is accumulated.
With an average of 3.6h of sunshine, January has the least sunshine of the year.
The months with the lowest UV index in Jamestown are January, February and November, with an average maximum UV index of 1.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Jamestown, North Dakota, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
June is the month with the most rainfall. Rain falls for 15.8 days and accumulates 2.95" (75mm) of precipitation.
In Jamestown, North Dakota, snow does not fall in June through September.
The month with the longest days is June, with an average of 15h and 48min of daylight.
June and July, with an average maximum UV index of 6, are months with the highest UV index.
In Jamestown, North Dakota, the peak temperatures are generally noted in July, averaging a high of 81.3°F (27.4°C) and a low of 60.4°F (15.8°C).
July has the most sunshine of the year, with an average of 11h of sunshine.
The least humid month is August, with an average relative humidity of 59%.
December is the month with the most snowfall in Jamestown. Snow falls for 13.3 days and accumulates 4.69" (119mm) of snow.
December has the shortest days of the year, with an average of 8h and 36min of daylight.
Average temperature
Jamestown, ND
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (17.8°F).
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (3.6°F).
Average pressure
Jamestown, ND
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.18"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.85"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
29.96"Hg - Average pressure in November:
30.05"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is February (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed
Jamestown, ND
- Average wind speed in January:
10.9mph - Average wind speed in February:
10.1mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.9mph - Average wind speed in May:
10.3mph - Average wind speed in June:
9.3mph
- Average wind speed in July:
8.7mph - Average wind speed in August:
8.5mph - Average wind speed in September:
10.1mph - Average wind speed in October:
11.2mph - Average wind speed in November:
10.5mph - Average wind speed in December:
10.5mph
The windiest month (with the highest average wind speed) is October (11.2mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity
Jamestown, ND
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (59%).
Average rainfall
Jamestown, ND
- Average rainfall in January:
0.55" - Average rainfall in February:
0.59" - Average rainfall in March:
0.91" - Average rainfall in April:
1.5" - Average rainfall in May:
2.24" - Average rainfall in June:
2.95"
- Average rainfall in July:
1.97" - Average rainfall in August:
1.34" - Average rainfall in September:
1.42" - Average rainfall in October:
1.85" - Average rainfall in November:
0.59" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is June (2.95").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days
Jamestown, ND
- Average rainfall days in January:
2.7 days - Average rainfall days in February:
1.6 days - Average rainfall days in March:
6.5 days - Average rainfall days in April:
10.4 days - Average rainfall days in May:
13.6 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
12.4 days - Average rainfall days in August:
11.2 days - Average rainfall days in September:
8.5 days - Average rainfall days in October:
8 days - Average rainfall days in November:
3.6 days - Average rainfall days in December:
2.3 days
The month with the highest number of rainy days is June (15.8 days).
The month with the least rainy days is February (1.6 days).
Average snowfall
Jamestown, ND
- Average snowfall in January:
3.35" - Average snowfall in February:
3.78" - Average snowfall in March:
3.39" - Average snowfall in April:
1.77" - Average snowfall in May:
0.39" - Average snowfall in June:
0"
The month with the highest snowfall is December (4.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Jamestown, ND
- Average snowfall days in January:
12.8 days - Average snowfall days in February:
11.6 days - Average snowfall days in March:
9.9 days - Average snowfall days in April:
4.5 days - Average snowfall days in May:
0.7 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
2.4 days - Average snowfall days in November:
7.8 days - Average snowfall days in December:
13.3 days
The month with the highest number of snowfall days is December (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Jamestown, ND
- Average daylight in January:
9h and 0min - Average daylight in February:
10h and 18min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 36min - Average daylight in May:
15h and 6min - Average daylight in June:
15h and 48min
- Average daylight in July:
15h and 24min - Average daylight in August:
14h and 12min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 24min - Average daylight in December:
8h and 36min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in January:
3h and 36min - Average sunshine in February:
3h and 54min - Average sunshine in March:
4h and 54min - Average sunshine in April:
7h and 18min - Average sunshine in May:
8h and 54min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
11h and 0min - Average sunshine in August:
10h and 48min - Average sunshine in September:
8h and 42min - Average sunshine in October:
6h and 6min - Average sunshine in November:
5h and 0min - Average sunshine in December:
3h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Jamestown, ND
- Average sunshine days in January:
16.9 days - Average sunshine days in February:
16.9 days - Average sunshine days in March:
15.3 days - Average sunshine days in April:
15.4 days - Average sunshine days in May:
15.2 days - Average sunshine days in June:
12 days
- Average sunshine days in July:
15.3 days - Average sunshine days in August:
17.3 days - Average sunshine days in September:
19.8 days - Average sunshine days in October:
18.7 days - Average sunshine days in November:
19.1 days - Average sunshine days in December:
16.7 days
The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is June (12 days).
Average UV index
Jamestown, ND
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover
Jamestown, ND
The month with the most cloud cover is February (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 24).
Average visibility
Jamestown, ND
The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).
