1. Hyslop Weather Station

Station Information:Hyslop Weather Station
Latitude / Longitude: 44° 38' 03"/123° 11' 24"
Elevation: 230'

 

(Note: All figures are for the previous day. Readings are taking at 8:00 AM local time every day. For questions about the data, contact Dan Curry )

Weather Data archives

Growing Degree Days

Other Sources

National Oceanic and Atmospheric Administration (NOAA)

The Hyslop site weather data from 1893 to the present are all available from NOAA. Once you are on the site, you will need to search for "Corvallis" and then select "Corvallis State University".

AgriMet: Cooperative Agricultural Weather Network

 

Current Months Weather Data

Date Ending at Observation Max Ending at Observation Min At Observation 8AM Ground Level Max Ground Level Min 2 inches - Max 2 inches - Min 4 inches - Max 4 inches - Min 8 inches - Max 8 inches - Min 20 inches - Max 40 inches - Max Rain (in) Snow (in) Accumulated Growing Degree Day* 24 Hour Air Movement** Evaporation (in)
2026-04-01 60 45 47 61 45 57 52 56 52 45 45 47 53 0.05 630 100 0.00
2026-04-02 53 38 42 54 37 54 51 53 51 44 44 47 53 0.78 638 115 0.00
2026-04-03 59 31 45 60 31 57 50 55 50 44 43 47 53 0.01 645 67 0.11
2026-04-04 63 41 44 63 39 61 51 58 49 45 41 48 54 0.00 656 55 0.10
2026-04-05 70 42 46 71 42 63 53 59 52 47 44 48 54 0.00 669 58 0.16
2026-04-06 78 39 53 79 39 66 55 61 54 49 47 46 54 0.00 684 19 0.18
2026-04-07 80 38 47 82 36 68 56 63 57 51 47 49 54 0.00 699 40 0.19
2026-04-08 66 35 47 69 34 65 55 61 57 50 48 50 54 0.00 709 28 0.13
2026-04-09 71 40 52 74 39 67 54 63 55 50 47 49 54 0.00 723 30 0.14
2026-04-10 73 46 55 74 48 66 57 62 57 50 48 50 55 0.00 738 52 0.14
2026-04-11 75 48 51 76 48 70 59 66 59 53 51 52 55 0.17 754 52 0.00
2026-04-12 67 42 47 70 40 67 59 64 59 52 50 52 55 0.70 767 38 0.00
2026-04-13 55 44 47 56 44 59 57 58 57 49 49 52 55 0.12 776 77 0.04
2026-04-14 58 39 44 61 39 61 56 59 57 49 49 51 55 0.00 786 80 0.13
2026-04-15 51 43 45 51 43 56 55 55 55 47 47 55 56 0.56 794 173 0.00
2026-04-16 51 36 39 53 35 58 53 57 54 47 46 50 56 0.22 800 93 0.00
2026-04-17 57 31 43 58 31 61 53 58 54 47 46 51 56 0.01 807 31 0.08
*= Degrees C, Zero Degree C base
(daily maximum temp (degrees C) + daily minimum temp (degrees C))/2, added cumulatively on a daily basis starting on January 1st of each year.
**= miles of air movement
Growing degree day: Growing degrees (GDs) is defined as the number of temperature degrees above a threshold base temperature, at which point plant growth ceases. The base temperature used in the Hyslop Weather Station GDDs is set to zero degrees C (32 degrees F). Growing degree days are accumulated by adding each day’s growing degree amount, starting on January 1st of each year. The Hyslop weather station website GDD information has been used historically by cool season grass growers and other growers in the region to determine optimal timing for early spring N fertilizer applications.

Monthly Weather Data

April, 2026 Air Temperature
Ending at Observation Max Ending at Observation Min Rain Evaporation
Normal 60.60 39.90 3.10
Average 63.90 39.90
Departure 3.30 0.00 -0.48
Total     2.62 1.40
normal = monthly normal
average = a 20 year monthly average
departure = monthly departure from the normal