Allendale, United States experiences average highs of 14°C (57°F) and lows of 7°C (45°F) throughout the year. Rainfall is moderate, averaging about 11 rainy days per month. Average highs have stayed broadly stable across the available records.
Allendale, United States Weather & Climate 2026
Monthly climate averages for Allendale, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Feb–Nov 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5/10
Best: June, July, August, September
UV Index
5
Low
Temperature 14°C / 7°C
Feels Like 12°C / 4°C
Rainy Days 11
Rainfall 83 mm
Sunshine 8 h
Humidity 73%
Wind Speed 22 km/h
Dew Point 5°C
Snow Days 9 days
Frost Days 17 days
Hottest Month
26°C
July
Avg Low19°C
Rain10days
Coldest Month
-5°C
January
Avg High0°C
Rain13days
Driest Month
9days
February
Avg High1°C
Avg Low-5°C
Windiest Month
25 km/h
December (Gusts 44)
Worst Time to Visit
Consider avoiding January, February, March, December due to very cold temperatures, frequent rain.
Sun Position
Sunrise 06:06
Daylight 15.3h
Sunset 21:26
Live conditions—
Allendale on the map · live conditions
Allendale, United States
- Continent
- Americas
- Country
- United States
- City
- Allendale
- Population
- 17.6K
- Elevation
- 199 m
- Coordinates
- 42.97°, -85.95°
Seasonal Breakdown
Spring
Mar–May
Avg High 12°C
Avg Low 4°C
Rain 12 days/mo
Summer
Jun–Aug
Avg High 25°C
Avg Low 18°C
Rain 10 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 15°C
Avg Low 9°C
Rain 11 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 1°C
Avg Low -4°C
Rain 12 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 0°C / -5°C . Feb: 1°C / -5°C . Mar: 7°C / -1°C . Apr: 12°C / 4°C . May: 18°C / 10°C . Jun: 24°C / 16°C . Jul: 26°C / 19°C . Aug: 26°C / 18°C . Sep: 23°C / 16°C . Oct: 16°C / 10°C . Nov: 8°C / 3°C . Dec: 3°C / -2°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 67 mm. Feb: 57 mm. Mar: 89 mm. Apr: 97 mm. May: 107 mm. Jun: 95 mm. Jul: 72 mm. Aug: 84 mm. Sep: 77 mm. Oct: 110 mm. Nov: 69 mm. Dec: 72 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 77%. Feb: 74%. Mar: 69%. Apr: 69%. May: 70%. Jun: 71%. Jul: 74%. Aug: 73%. Sep: 72%. Oct: 73%. Nov: 73%. Dec: 76%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 24 km/h . Feb: 25 km/h . Mar: 24 km/h . Apr: 23 km/h . May: 20 km/h . Jun: 19 km/h . Jul: 18 km/h . Aug: 17 km/h . Sep: 19 km/h . Oct: 23 km/h . Nov: 25 km/h . Dec: 25 km/h .
Sunshine
Sunshine
Sunshine: Jan: 4h. Feb: 6h. Mar: 8h. Apr: 9h. May: 11h. Jun: 12h. Jul: 12h. Aug: 12h. Sep: 10h. Oct: 7h. Nov: 6h. Dec: 4h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 4. Apr: UV 5. May: UV 7. Jun: UV 7. Jul: UV 7. Aug: UV 6. Sep: UV 5. Oct: UV 4. Nov: UV 2. Dec: UV 2.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 17 days. Feb: 12 days. Mar: 7 days. Apr: 4 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 1 days. Nov: 6 days. Dec: 13 days.
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending drier by about 13 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 27°C | Jul · 26°C |
| Coldest month | Jan 2025 · -7°C | Jan · -5°C |
| Wettest month | Jun 2025 · 101 mm | Oct · 110 mm |
| Windiest month | Mar 2025 · 27 km/h | Dec · 25 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Poor May
Good June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Fair November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 0°C / -5°C | -5°C / -11°C | 13days (67 mm) Wet | 4.1h Fair | 77% Humid | 2 Low | Poor | View Details |
| February | 1°C / -5°C | -3°C / -11°C | 9days (57 mm) Wet | 6.4h Fair | 74% Muggy | 3.1 Moderate | Poor | View Details |
| March | 7°C / -1°C | 3°C / -6°C | 11days (89 mm) Wet | 8h Good | 69% Muggy | 4.2 Moderate | Poor | View Details |
| April | 12°C / 4°C | 9°C / -1°C | 12days (97 mm) Wet | 9.2h Good | 69% Muggy | 5.4 High | Poor | View Details |
| May | 18°C / 10°C | 18°C / 7°C | 12days (107 mm) Wet | 10.6h Excellent | 70% Muggy | 6.5 High | Good | View Details |
| June best | 24°C / 16°C | 25°C / 15°C | 10days (95 mm) Wet | 12h Excellent | 71% Muggy | 6.9 High | Excellent | View Details |
| July best | 26°C / 19°C | 28°C / 20°C | 10days (72 mm) Wet | 12.4h Excellent | 74% Muggy | 7 High | Excellent | View Details |
| August best | 26°C / 18°C | 27°C / 19°C | 9days (84 mm) Wet | 11.5h Excellent | 73% Muggy | 6.4 High | Excellent | View Details |
| September best | 23°C / 16°C | 23°C / 15°C | 9days (77 mm) Wet | 9.7h Good | 72% Muggy | 5.1 High | Excellent | View Details |
| October | 16°C / 10°C | 13°C / 6°C | 13days (110 mm) Wet | 7.2h Good | 73% Muggy | 3.5 Moderate | Fair | View Details |
| November | 8°C / 3°C | 4°C / -2°C | 10days (69 mm) Wet | 5.5h Fair | 73% Muggy | 2.3 Moderate | Poor | View Details |
| December | 3°C / -2°C | -2°C / -7°C | 13days (72 mm) Wet | 3.8h Poor | 76% Humid | 1.7 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Allendale are June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Allendale, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Allendale is July, with average daytime highs of 26°C (79°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Allendale is January, with average overnight lows of -5°C (23°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Allendale is October, averaging 110mm of precipitation across 13 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Allendale runs through January, October, December, April, with the heaviest rainfall in January. Based on 10-year averages for Allendale.
Allendale receives approximately 100 sunshine hours per year. The sunniest month is July with around 12 hours. Based on climate data for Allendale.
The least favorable months to visit Allendale are January, February, March, December, primarily due to very cold temperatures, frequent rain. For the best conditions, consider June, July, August, September instead.
The annual average UV index in Allendale is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Allendale is 73%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Allendale receives snow. Months with snowfall average 9 snow days and 14 cm (6 in) of accumulation, with about 17 frost days during winter.
Average wind speeds in Allendale are 22 km/h (14 mph). The windiest month is December with peak winds reaching 25 km/h (16 mph) (gusts up to 44 km/h / 27 mph).
Allendale averages 4 clear-sky days per month with overall cloud cover around 64%. The clearest skies occur in September.
The annual average dew point in Allendale is 5°C (41°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Allendale has a Humid Subtropical climate, classified as Cfa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Allendale ranges from 4°C (39°F) to 12°C (54°F) on average. Wind chill makes winters feel noticeably colder than the actual temperature — layered clothing is recommended.
Yes, June is a great time to visit Allendale. It earns a climate score of 8.7/10 with Excellent.
For June in Allendale, pack Umbrella, Waterproof jacket, Sunscreen (SPF 30+), Sunglasses, Comfortable walking shoes. With average highs of 24°C (75°F) and 10 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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