Helena (MT) Temperatures: Monthly Averages and Year-Round Insights
On this page, we’ll explore Helena’s temperature statistics in detail, including day and night variations and monthly averages. We’ll also compare the annual temperature to other cities in the United States of America.
Monthly Temperature Averages
The climate in Helena is known for significant temperature differences throughout the year. On average, maximum daytime temperatures range from a warm 29°C in July to a very cold -0°C in December. Nighttime temperatures can drop, with averages reaching -10°C in December.
The chart below illustrates the average maximum day and minimum night temperatures in Helena by month:
The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM. During this time the sun's heating effect is the strongest. July, the city’s warmest month receives 370 hours of sunshine.
The chart below shows the average temperature throughout the year:
December, the city’s coldest month, receives about 21 mm of rainfall spread over roughly 14 days. For more information, please visit our Helena Precipitation page.
Annual Temperatures in the United States of America Compared
The map below shows the annual temperature across the United States of America. You can also select the different months in case you are interested in a specific month.
very warm
warm
pleasant
moderate
cold
very cold
Helena Temperatures Compared World Wide
Helena’s average annual maximum temperature is 14°C. Let’s compare this with some popular tourist destinations:
Seville, Spain, stands out with its warm Mediterranean climate and an average annual temperature of 23°C.
Meanwhile, Queenstown, New Zealand, the average annual temperature is significantly lower at 10°C, with mild summers and cold winters.
The climate in San Francisco, USA, is mild, with an average annual temperature of 19°C and minimal seasonal variation.
In Tokyo, Japan, the average annual temperature is 21°C, expect warmer summers and milder winters than Amsterdam.
How does the temperature feel?
Humidity is an essential factor in how you experience temperature. When a warm period is accompanied by high humidity, it results in a higher perceived temperature. This is especially true when temperatures exceed 25°C, as it can cause greater discomfort.
On the other hand, in cooler months, especially when temperatures dip below 10°C, high humidity can intensify the cold. This makes the air feel much colder than it really is.
In Helena, during the coolest month, December, you will experience 68% humidity, which is considered high. This is accompanied by an average maximum temperature of -0°C. In the warmest month, July, the humidity is 46% combined with an average maximum temperature of 29°C, which creates a moderate-feel temperature. Explore our detailed page on humidity levels for further details.
How are these Temperatures Measured?
Generally, temperature data depicting climate is usually given over a 30-year average in order to reduce short-term fluctuations and reveal better long-term trends in climate conditions.
This temperature data is taken from land-based thermometers, ocean buoys, ships, and satellites. These measurements are transmitted to weather stations and climate centers around the globe where they are processed, averaged, and analyzed in order to monitor the trends and create climate models.
Sea vs. Land Temperatures
The influence of nearby oceans or large water bodies significantly affects local temperatures:
- Ocean Influence: Coastal regions tend to have more stable temperatures, as large bodies of water absorb and release heat slowly. This often results in milder winters and cooler summers compared to inland areas.
- Continental Climates: Landmasses well away from large bodies of water tend to show greater extremes in temperature, having hotter summers and colder winters because of the absence of water as a moderating influence.
For more detailed information about Helena’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Helena climate page.
Current temperature in Helena (MT)
3 m/s
broken clouds and no rain
4 m/s
almost clear and no rain
3 m/s
overcast and chance of slight rain
