Climate and monthly weather forecastSpeedway, IN
Climate and monthly weather forecast
The climate of Speedway
Speedway falls within the geographical boundaries of Cfa climate classification, indicating a Humid subtropical climate with no dry season, according to the Köppen climate classification system. This region experiences a relatively warm and humid climate throughout the year.Temperature variations across the year range from a lower average of 20.8°F (-6.2°C) in the colder months to a higher average of 81.9°F (27.7°C) during the warmer months. Similarly, Humidity tends to hold stable at a high level, with percentages only slightly deviating from the yearly average of 78%.
Precipitation varies as well, with an annual high average rainfall of 3.39" (86mm) in May. Snowfall is also common during the colder months, reaching a peak average of 2.76" (70mm) in January. While the cloud cover percentage tends to fluctuate throughout the year, the average wind speed remains relatively stable from 5.9mph (9.5km/h) to 9.8mph (15.8km/h).
Unique weather conditions include the highest temperatures, averaging from 80.1°F (26.7°C) to 81.9°F (27.7°C), seen in the months between June and August. There is an absence of snowfall between May and October, paired with an increase in sunshine hours from 8.7 hours to 10.2 hours during those months.
The best time to visit Speedway
The prime time to visit Speedway would be from May to August. During this period, temperatures are at their warmest, hovering around 71.6°F (22°C) to 81.9°F (27.7°C). There's also plentiful sunshine, with an average of from 8.7 hours to 10.2 hours per day, giving one plenty of daylight to explore the outdoors.The worst time to visit Speedway
Based on the available data, the most unfavorable period to visit Speedway is from November to February. This is when the temperatures are at their lowest, averaging between 20.8°F (-6.2°C) and 37.9°F (3.3°C), making it particularly cold. Moreover, snowfall is frequent during these winter months, adding an additional layer of chill to the already freezing temperatures.Spring weather in Speedway
Speedway's springtime is characterized by progressively rising temperatures, from an average low of 34.7°F (1.5°C) in March to a high of 71.6°F (22°C) in May. Rainfall levels also increase, from 2.36" (60mm) at the start of the season to 3.39" (86mm) by the end. The duration of daylight extends from 12 hours to 14.4 hours, and sunshine hours increase from 6.2 hours to 8.7 hours daily, marking a pleasantly bright and warm season.Summer weather in Speedway
Summertime in Speedway is synonymous with heat and humidity - temperatures during this season soar to an average high of 81.9°F (27.7°C) in July. Rainfall levels decrease, averaging from 2.91" (74mm) to 2.05" (52mm) from June to August. Due to the warmth and high humidity levels, this season proves to be quite sticky - the atmosphere is moist, and outdoor activities may prove to be quite tiresome.Autumn weather in Speedway
In Speedway, the autumn season witnesses a steady decline in temperature from a high of 75.6°F (24.2°C) in September to a low of 36.1°F (2.3°C) in November. Rainfall remains fairly constant, with just over 1.8" (46mm) per month. The decline in daylight hours, from 12.4 hours to 10 hours, signifies the transition from summer to winter.Winter weather in Speedway
Winter season in Speedway brings along a significant drop in temperature with heavy snowfall. From December to February, the temperatures range from 20.8°F (-6.2°C) to 37.9°F (3.3°C), and the average accumulation of snow ranges from 0.83" (21mm) to 2.76" (70mm). Daylight hours and sunshine time decrease, making it the darkest period of the year. Despite these conditions, the relative humidity levels and pressure remain fairly stable, suggesting a predictable, although harsh, climate during these months.Weather in January
January in Speedway, Indiana is typically the coldest month, immersed in the heart of winter. Temperatures dip to frigid levels with monthly average lows and highs from 20.8°F (-6.2°C) to 32.5°F (0.3°C), making it a chilly start to the year. Weather in January »Weather in February
Moving into February, Speedway experiences a slight increase in temperatures as winter slowly starts to ease off. A modest rise in the humidity accompanies the ameliorated weather condition. There is a slight decrease in snowfall from the previous month and the city begins to wade out of the deep winter situation. Weather in February »Weather in March
March marks a definite shift toward spring in Speedway, with warmer temperatures making their presence felt. However, it also records a high of 2.36" (60mm) of rainfall as well as a notable increase in daylight hours. The snowfall during this period is considerably reduced, and the snow-covered landscape slowly gives way to sprouting greens. Weather in March »Weather in April
In Speedway, April brings noticeable increases in all signs of spring. Temperatures continue to rise, and the unusually wet March gives way to a drier month. UV index rises, indicating the need for more sun protection for those who venture outdoors. Weather in April »Weather in May
Days in May are notably longer in Speedway, with increased sunlight hours as summer gradually unfolds. The lowering cloud percentage indicates clearer skies, with temperatures rising steadily towards peak summer levels. Despite the considerable rise in temperatures, the humidity remains relatively constant. Weather in May »Weather in June
June is the gateway to summer in Speedway, with temperatures climbing and hitting average highs of 80.1°F (26.7°C). Coinciding with this rise in temperatures, the UV index also peaks, making sunscreen a necessity for outdoor activities. Weather in June »Weather in July
July is the peak summer month in Speedway with the highest average temperatures recorded for the year. It also notices a peak in wind speed, ensuring balmy breezes that help counter the increased heat. The month offers the longest daylight hours, ideal for outdoor activities and picnics. Weather in July »Weather in August
August maintains the summer heat in Speedway, with temperatures remaining relatively comparable to July. However, there is a slight drop in wind speed, making the days more sultry. The dwindling daylight hours from its peak in July mark the onset of the end of summer. Weather in August »Weather in September
September brings in the autumn season in Speedway, with a noticeable drop in temperatures from the summer highs. With the humidity levels remaining relatively constant, it also marks a decrease in the hours of daylight. The cloud percentage begins to rise and the days progressively become cooler. Weather in September »Weather in October
Speedway welcomes October with a drop in temperatures and increasing rainfall, fostering a sense of autumn. The city witnesses an abrupt rise in wind speed, adding to the sense of changing seasons. The amount of daylight continues to decrease, leading to brisk mornings and early nights. Weather in October »Weather in November
November progresses with a cool climate in Speedway, as winter begins to make its presence felt. The city registers an increase in the pressure and lower cloud percentage, indicating crisp, clear days. It is the month when the steady descent into winter is most noticeable. Weather in November »Weather in December
As winter sets in fully, Speedway in December observes a low of 27.9°F (-2.3°C) and a high of 38.3°F (3.5°C), making it one of the coldest months of the year. The city also experiences a rise in snowfall from November to December, heralding the white cover of the winter season. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Speedway, IN
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (32.5°F).
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure
Speedway, IN
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Speedway, IN
- Average wind speed in January:
9.8mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.6mph - Average wind speed in May:
8mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
5.9mph - Average wind speed in August:
5.8mph - Average wind speed in September:
6.6mph - Average wind speed in October:
8.4mph - Average wind speed in November:
8.9mph - Average wind speed in December:
9.1mph
The windiest months (with the highest average wind speed) are January and February (9.8mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity
Speedway, IN
The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Speedway, IN
- Average rainfall in January:
2.05" - Average rainfall in February:
1.54" - Average rainfall in March:
2.36" - Average rainfall in April:
3.11" - Average rainfall in May:
3.39" - Average rainfall in June:
2.91"
- Average rainfall in July:
2.36" - Average rainfall in August:
2.05" - Average rainfall in September:
1.85" - Average rainfall in October:
1.85" - Average rainfall in November:
1.81" - Average rainfall in December:
1.93"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is February (1.54").
Average rainfall days
Speedway, IN
- Average rainfall days in January:
8.5 days - Average rainfall days in February:
8.4 days - Average rainfall days in March:
13.8 days - Average rainfall days in April:
16 days - Average rainfall days in May:
19 days - Average rainfall days in June:
17 days
- Average rainfall days in July:
17.2 days - Average rainfall days in August:
15.8 days - Average rainfall days in September:
14.1 days - Average rainfall days in October:
12.7 days - Average rainfall days in November:
11 days - Average rainfall days in December:
10.4 days
The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is February (8.4 days).
Average snowfall
Speedway, IN
- Average snowfall in January:
2.76" - Average snowfall in February:
2.32" - Average snowfall in March:
1.34" - Average snowfall in April:
0.16" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is January (2.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Speedway, IN
- Average snowfall days in January:
10.8 days - Average snowfall days in February:
8.7 days - Average snowfall days in March:
4.6 days - Average snowfall days in April:
0.8 days - Average snowfall days in May:
0.2 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:
0.5 days - Average snowfall days in November:
2.7 days - Average snowfall days in December:
8.6 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Speedway, IN
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
4h and 6min - Average sunshine in February:
5h and 6min - Average sunshine in March:
6h and 12min - Average sunshine in April:
7h and 6min - Average sunshine in May:
8h and 42min - Average sunshine in June:
10h and 12min
- Average sunshine in July:
10h and 12min - Average sunshine in August:
9h and 30min - Average sunshine in September:
8h and 24min - Average sunshine in October:
6h and 42min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 12min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
Speedway, IN
- Average sunshine days in January:
13.7 days - Average sunshine days in February:
12.7 days - Average sunshine days in March:
13 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
9.3 days - Average sunshine days in June:
10.1 days
- Average sunshine days in July:
10.3 days - Average sunshine days in August:
11.4 days - Average sunshine days in September:
13.8 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
16.6 days - Average sunshine days in December:
14.3 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is May (9.3 days).
Average UV index
Speedway, IN
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Speedway, IN
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Speedway, IN
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





