Climate and monthly weather forecastGrafton, ND
Climate and monthly weather forecast
The climate of Grafton
Grafton, located in North Dakota, USA, has a predominate Köppen climate classification of Dfb. This refers to a type of climate that is characterized as humid continental, with no dry season and warm summers. Throughout the year, its climate remains rather unique due to its geographical position. Responding to the change of seasons, monthly variations in temperature, humidity, rainfall, and other climate parameters occur.An analysis of the climatic information reveals that temperatures swing between an average high of 80.4°F (26.9°C) in the warmest month of August and an average low of 0.9°F (-17.3°C) in January, the coldest month. Humidity levels are relatively stable, with slight changes across the months - generally, the relative humidity hovers between a maximum of 91% in January and a minimum of 59% in August.
The average rainfall ranges from 0.55" (14mm) in the dryer months of January and February, reaching a peak of 2.8" (71mm) in June. Interestingly, the number of rainfall days shows a similar pattern, making June the wettest month with an average of 15.9 days in contrast to February’s average of only 1.6 days. The city also experiences a fair share of snowfall from November to April, with December and January being the peak months.
There is over 16 hours of daylight in June and July, and around 11 hours of sunshine in July. The climate data also shows that wind speeds vary minimally, with an average of 10.6mph (17.1km/h) in October to 8.1mph (13km/h) in July and August.
The best time to visit Grafton
The preferred time for visiting Grafton would be during the warm summer months, between June and August. In this period, temperatures average between 73°F (22.8°C) to 80.4°F (26.9°C), making it ideal for outdoor activities. There is ample daylight, with around 15.6 to 16 hours per day, and plentiful sunshine, approximately 10.6 to 11 hours daily. Despite June being the wettest month in terms of rainfall, it also offers the longest daylight duration among all months, maximizing outdoor enjoyment and exploration.The worst time to visit Grafton
Conversely, the harshest months to visit Grafton would be in the winter, more specifically from December to February. During these months, the temperatures plummet to their lowest, dipping to between 0.9°F (-17.3°C) to 2.3°F (-16.5°C). Also, these months experience the highest amount of snowfall, up to 3.94" (100mm) of snow in December. Coupled with the shorter daylight hours - 8.9 to 9.2 hours, and limited sunshine - 3.2 to 3.6 hours, outside activities are greatly restricted.Spring weather in Grafton
Spring, spanning from March to May in Grafton, witnesses transition in weather conditions. The temperatures begin to climb, moving from 32.5°F (0.3°C) in March to a comfortable 64.6°F (18.1°C) by May. Simultaneously, the spring sees increased rainfall, averaging from 0.87" (22mm) in March to 2.01" (51mm) in May, alongside longer daylight hours and more sunshine, making the weather conducive for being outdoors.Summer weather in Grafton
The months of June to August constitute summer with temperatures escalating, reaching their prime at 80.4°F (26.9°C) in August. It is also the wettest season with rainfall peaking in June before descending gradually. Strong winds are minimal during summer, averaging between 8.1 to 8.7mph (14km/h), making it the calmest season. Grafton gets its longest hours of daylight and sunshine in the summer, providing ample opportunities for visitors to explore and enjoy the outdoor sights.Autumn weather in Grafton
Autumn, which lasts from September to November, heralds a cooling period for Grafton. Average temperatures begin to drop from 70.5°F (21.4°C) in September to 34.9°F (1.6°C) in November. Rainfall decreases as well, from 1.81" (46mm) in September to 0.63" (16mm) in November, while hours of daylight dwindle. Despite this, the pleasant autumn scenery of changing foliage colors can be a charming sight for visitors.Winter weather in Grafton
Winter sets in from December to February, and it is when Grafton witnesses its coldest temperatures and maximum snowfall. The temperatures fall steeply to between 0.9°F (-17.3°C) to 2.3°F (-16.5°C). Furthermore, daylight is significantly reduced to approximately 9.2 hours in December, and even less in January and February. Coupled with increased cloud cover and slower wind speeds, winters in Grafton offer a chilly yet serene landscape.Weather in January
January in Grafton, North Dakota, is the coldest of all months. It features the chilling climax of winter along with low visibility. Heavy snowfall is common with 3.23" (82mm) on average. As the month unfolds, a slight improvement in weather conditions is noted but the cold grip of winter still holds strong. Weather in January »Weather in February
Change remains minimal as winter carries into February. The majority of days are still cold with a predominant frosty ambiance. Inclement weather invites a significant snowfall of 3.15" (80mm). While not a drastic change from January, there's a subtle upward trend in temperature by month's end. Weather in February »Weather in March
Winter losses its grip slightly in March, hinting at the approach of spring. Daylight hours increase, indicative of the seasonal transition. Precipitation levels rise but snowfall decreases to 2.56" (65mm). Despite the cold winds and chill, March showcases the resilience of Grafton's residents, unyielding to the cruel twists and turns of North Dakota weather. Weather in March »Weather in April
In April, Grafton breaks free from winter's clutch with the onset of spring. The city begins to rejuvenate with longer periods of sunshine. As spring gains momentum, the average snowfall drastically decreases to just 1.69" (43mm). Residents bid farewell to winter with a sense of relief and start embracing the pleasant warmth. Weather in April »Weather in May
May heralds the establishment of spring, with floral bloom gracing the cityscapes of Grafton. Lighter apparel starts replacing heavy winter wear as the days continue to warm. A significantly high rainfall volume of 2.01" (51mm) sets in, making May one of the wettest months. Weather in May »Weather in June
June sees a considerable escalation in temperature, marking the arrival of summer. The sun shines longer, illuminating Grafton in its full glory. Rainfall peaks to its annual high of 2.8" (71mm), providing some respite from the rising temperatures. Weather in June »Weather in July
The heat soars in July as summer hits its zenith. Daily oleasure in water-based recreational activities heighten. Amidst the hot conditions, Grafton receives around 1.97" (50mm) of rain. So, while the temperatures may be high, the weather remains generally comfortable. Weather in July »Weather in August
August continues the reign of summer but hints at its eventual close. The luster of the season remains intact, with generous hours of sunshine. The precipitation drops to 1.18" (30mm) as compared to the previous high of July. August beautifully caps off the summer, making way for the gradual transition into the cooler months ahead. Weather in August »Weather in September
September in Grafton ushers in the autumnal transition, shedding the summer heat for milder temperatures. The leaves start changing color, painting the city in shades of orange and brown. Despite the transition, rainfall remains significant at 1.81" (46mm). Weather in September »Weather in October
October advances the Fall season further, with colorful foliage adorning Grafton. Light jackets resurface as temperatures continue to dip. A significant drop is noticeable in rainfall with a total of just 1.69" (43mm) in October. Weather in October »Weather in November
November introduces the onset of winter, with temperatures falling steadily. Winter wear comes into play, dominating the fashion scene locally. Snowflakes start making an appearance with an average snowfall of 2.8" (71mm). As Grafton embraces the chilly winter, citizens prepare themselves for the return of a season synonymous with cozy fireplaces and hot beverages. November's arrival brings a noticeable temperature shift, dropping from a fresh 52.3°F (11.3°C) in October to a wintry 34.9°F (1.6°C). Weather in November »Weather in December
By December, Grafton firmly falls under winter's rule. Daylight hours decrease significantly, further amplifying the cold. Under the snowy blanket that reaches a depth of 3.94" (100mm), Grafton transforms into a winter wonderland. 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
The lowest temperatures in Grafton are recorded in January, with averages reaching a high of 14.7°F (-9.6°C) and a low of 0.9°F (-17.3°C).
With an average relative humidity of 91%, January is the most humid month.
January and February are months with the least rain when the rain falls for 2.9 days and typically aggregates up to 0.55" (14mm) of rain.
In Grafton, North Dakota, during the entire year, the rain falls for 97.8 days and collects up to 15.83" (402mm) of precipitation.
January through May, October through December are months with snowfall in Grafton, North Dakota.
In Grafton, during the entire year, snow falls for 70.4 days and aggregates up to 18.46" (469mm) of snow.
January has the least sunshine of the year, with an average of 3.2h of sunshine.
January, February and November, with an average maximum UV index of 1, are months with the lowest UV index.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Grafton, 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.
The month with the most rainfall in Grafton, North Dakota, is June, when the rain falls for 15.9 days and typically aggregates up to 2.8" (71mm) of precipitation.
June through September are months without snowfall.
With an average of 16h and 0min of daylight, June has the longest days of the year.
With an average of 11h of sunshine, July has the most sunshine of the year in Grafton, North Dakota.
The month with the highest UV index is July, with an average maximum UV index of 6.
In Grafton, North Dakota, the peak temperatures are generally noted in August, averaging a high of 80.4°F (26.9°C) and a low of 59°F (15°C).
With an average relative humidity of 59%, August is the least humid month.
The month with the most snowfall in Grafton is December, when snow falls for 14 days and typically aggregates up to 3.94" (100mm) of snow.
December has the shortest days of the year in Grafton, North Dakota, with an average of 8h and 24min of daylight.
Average temperature
Grafton, ND
The warmest month (with the highest average high temperature) is August (80.4°F).
The month with the lowest average high temperature is January (14.7°F).
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (0.9°F).
Average pressure
Grafton, ND
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.16"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.85"Hg
- Average pressure in July:
29.9"Hg - Average pressure in August:
29.9"Hg - Average pressure in September:
29.95"Hg - Average pressure in October:
29.94"Hg - Average pressure in November:
30.03"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed
Grafton, ND
- Average wind speed in January:
10mph - Average wind speed in February:
9.6mph - Average wind speed in March:
9.6mph - Average wind speed in April:
10.1mph - Average wind speed in May:
9.8mph - Average wind speed in June:
8.7mph
- Average wind speed in July:
8.1mph - Average wind speed in August:
8.1mph - Average wind speed in September:
9.8mph - Average wind speed in October:
10.6mph - Average wind speed in November:
10mph - Average wind speed in December:
9.6mph
The windiest month (with the highest average wind speed) is October (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).
Average humidity
Grafton, ND
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (59%).
Average rainfall
Grafton, ND
- Average rainfall in January:
0.55" - Average rainfall in February:
0.55" - Average rainfall in March:
0.87" - Average rainfall in April:
0.98" - Average rainfall in May:
2.01" - Average rainfall in June:
2.8"
- Average rainfall in July:
1.97" - Average rainfall in August:
1.18" - Average rainfall in September:
1.81" - Average rainfall in October:
1.69" - Average rainfall in November:
0.63" - Average rainfall in December:
0.79"
The wettest month (with the highest rainfall) is June (2.8").
The driest months (with the least rainfall) are January and February (0.55").
Average rainfall days
Grafton, ND
- Average rainfall days in January:
2.9 days - Average rainfall days in February:
1.6 days - Average rainfall days in March:
7.6 days - Average rainfall days in April:
10.2 days - Average rainfall days in May:
13 days - Average rainfall days in June:
15.9 days
- Average rainfall days in July:
12.5 days - Average rainfall days in August:
9.2 days - Average rainfall days in September:
8.7 days - Average rainfall days in October:
9.1 days - Average rainfall days in November:
4.6 days - Average rainfall days in December:
2.5 days
The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is February (1.6 days).
Average snowfall
Grafton, ND
- Average snowfall in January:
3.23" - Average snowfall in February:
3.15" - Average snowfall in March:
2.56" - Average snowfall in April:
1.69" - Average snowfall in May:
0.2" - Average snowfall in June:
0"
The month with the highest snowfall is December (3.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Grafton, ND
- Average snowfall days in January:
14.7 days - Average snowfall days in February:
12.9 days - Average snowfall days in March:
10.6 days - Average snowfall days in April:
5.4 days - Average snowfall days in May:
0.4 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:
2.7 days - Average snowfall days in November:
9.7 days - Average snowfall days in December:
14 days
The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Grafton, ND
- Average daylight in January:
8h and 54min - Average daylight in February:
10h and 12min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 42min - Average daylight in May:
15h and 18min - Average daylight in June:
16h and 0min
- Average daylight in July:
15h and 36min - Average daylight in August:
14h and 18min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 48min - Average daylight in November:
9h and 12min - Average daylight in December:
8h and 24min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in January:
3h and 12min - Average sunshine in February:
3h and 36min - Average sunshine in March:
4h and 30min - Average sunshine in April:
7h and 18min - Average sunshine in May:
8h and 54min - Average sunshine in June:
9h and 36min
- Average sunshine in July:
11h and 0min - Average sunshine in August:
10h and 36min - Average sunshine in September:
8h and 42min - Average sunshine in October:
5h and 18min - Average sunshine in November:
4h and 30min - Average sunshine in December:
3h and 48min
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 12min).
Average sunshine days
Grafton, ND
- Average sunshine days in January:
15.8 days - Average sunshine days in February:
15.2 days - Average sunshine days in March:
13.9 days - Average sunshine days in April:
14.9 days - Average sunshine days in May:
15.3 days - Average sunshine days in June:
11.5 days
- Average sunshine days in July:
15.9 days - Average sunshine days in August:
19.8 days - Average sunshine days in September:
19.5 days - Average sunshine days in October:
18 days - Average sunshine days in November:
16.5 days - Average sunshine days in December:
17 days
The month with the most sunshine days is August (19.8 days).
The month with the least sunshine days is June (11.5 days).
Average UV index
Grafton, ND
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover
Grafton, ND
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility
Grafton, ND
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
